diff --git a/dmp-backend/core/src/main/java/eu/eudat/query/ReferenceQuery.java b/dmp-backend/core/src/main/java/eu/eudat/query/ReferenceQuery.java
index 76d0110dd..91bce6f5d 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/query/ReferenceQuery.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/query/ReferenceQuery.java
@@ -36,6 +36,7 @@ public class ReferenceQuery extends QueryBase<ReferenceEntity> {
     private Collection<ReferenceType> referenceTypes;
 
     private Collection<String> references;
+    private Collection<String> sources;
 
     private Collection<UUID> excludedIds;
 
@@ -111,6 +112,21 @@ public class ReferenceQuery extends QueryBase<ReferenceEntity> {
         return this;
     }
 
+    public ReferenceQuery sources(String value) {
+        this.sources = List.of(value);
+        return this;
+    }
+
+    public ReferenceQuery sources(String... value) {
+        this.sources = Arrays.asList(value);
+        return this;
+    }
+
+    public ReferenceQuery sources(Collection<String> values) {
+        this.sources = values;
+        return this;
+    }
+
     public ReferenceQuery excludedIds(Collection<UUID> values) {
         this.excludedIds = values;
         return this;
@@ -177,7 +193,7 @@ public class ReferenceQuery extends QueryBase<ReferenceEntity> {
 
     @Override
     protected Boolean isFalseQuery() {
-        return this.isEmpty(this.ids) || this.isEmpty(this.isActives) || this.isEmpty(this.excludedIds) || this.isEmpty(this.referenceTypes) || this.isEmpty(this.referenceSourceTypes)|| this.isFalseQuery(this.dmpReferenceQuery);
+        return this.isEmpty(this.ids) || this.isEmpty(this.isActives) || this.isEmpty(this.sources) ||this.isEmpty(this.excludedIds) || this.isEmpty(this.referenceTypes) || this.isEmpty(this.referenceSourceTypes)|| this.isFalseQuery(this.dmpReferenceQuery);
     }
 
     @Override
@@ -219,6 +235,12 @@ public class ReferenceQuery extends QueryBase<ReferenceEntity> {
                 inClause.value(item);
             predicates.add(inClause);
         }
+        if (this.sources != null) {
+            CriteriaBuilder.In<String> inClause = queryContext.CriteriaBuilder.in(queryContext.Root.get(ReferenceEntity._source));
+            for (String item : this.sources)
+                inClause.value(item);
+            predicates.add(inClause);
+        }
         if (this.excludedIds != null) {
             CriteriaBuilder.In<UUID> notInClause = queryContext.CriteriaBuilder.in(queryContext.Root.get(ReferenceEntity._id));
             for (UUID item : this.excludedIds)
diff --git a/dmp-backend/core/src/main/java/eu/eudat/service/description/DescriptionServiceImpl.java b/dmp-backend/core/src/main/java/eu/eudat/service/description/DescriptionServiceImpl.java
index 039e2d5e3..72c5c03bd 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/service/description/DescriptionServiceImpl.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/service/description/DescriptionServiceImpl.java
@@ -509,12 +509,13 @@ public class DescriptionServiceImpl implements DescriptionService {
                 referenceEntity = this.entityManager.find(ReferenceEntity.class, referencePersist.getId());
                 if (referenceEntity == null) throw new MyNotFoundException(messageSource.getMessage("General_ItemNotFound", new Object[]{referencePersist.getId(), Reference.class.getSimpleName()}, LocaleContextHolder.getLocale()));
             } else {
-                referenceEntity = this.queryFactory.query(ReferenceQuery.class).sourceTypes(referencePersist.getSourceType()).references(referencePersist.getReference()).first();
+                referenceEntity = this.queryFactory.query(ReferenceQuery.class).sourceTypes(referencePersist.getSourceType()).sources(referencePersist.getSource()).isActive(IsActive.Active).references(referencePersist.getReference()).first();
                 if (referenceEntity == null){
                     referenceEntity = new ReferenceEntity();
                     referenceEntity.setId(UUID.randomUUID());
                     referenceEntity.setIsActive(IsActive.Active);
                     referenceEntity.setCreatedAt(Instant.now());
+                    referenceEntity.setType(referencePersist.getType());
 
                     referenceEntity.setDefinition(this.xmlHandlingService.toXmlSafe(this.buildDefinitionEntity(referencePersist.getDefinition())));
                     referenceEntity.setUpdatedAt(Instant.now());
diff --git a/dmp-backend/core/src/main/java/eu/eudat/service/dmp/DmpServiceImpl.java b/dmp-backend/core/src/main/java/eu/eudat/service/dmp/DmpServiceImpl.java
index 2970813b7..37fd26d96 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/service/dmp/DmpServiceImpl.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/service/dmp/DmpServiceImpl.java
@@ -647,12 +647,13 @@ public class DmpServiceImpl implements DmpService {
                 referenceEntity = this.entityManager.find(ReferenceEntity.class, referencePersist.getId());
                 if (referenceEntity == null) throw new MyNotFoundException(messageSource.getMessage("General_ItemNotFound", new Object[]{referencePersist.getId(), Reference.class.getSimpleName()}, LocaleContextHolder.getLocale()));
             } else {
-                referenceEntity = this.queryFactory.query(ReferenceQuery.class).sourceTypes(referencePersist.getSourceType()).references(referencePersist.getReference()).first();
+                referenceEntity = this.queryFactory.query(ReferenceQuery.class).sourceTypes(referencePersist.getSourceType()).sources(referencePersist.getSource()).isActive(IsActive.Active).references(referencePersist.getReference()).first();
                 if (referenceEntity == null){
                     referenceEntity = new ReferenceEntity();
                     referenceEntity.setId(UUID.randomUUID());
                     referenceEntity.setIsActive(IsActive.Active);
                     referenceEntity.setCreatedAt(Instant.now());
+                    referenceEntity.setType(referencePersist.getType());
 
                     referenceEntity.setDefinition(this.xmlHandlingService.toXmlSafe(this.buildDefinitionEntity(referencePersist.getDefinition())));
                     referenceEntity.setUpdatedAt(Instant.now());