diff --git a/Interfaces/IXBaseReferenced.cs b/Interfaces/IXBaseReferenced.cs
index 0888c78..62cfdf8 100644
--- a/Interfaces/IXBaseReferenced.cs
+++ b/Interfaces/IXBaseReferenced.cs
@@ -1,16 +1,19 @@
 using System;
 using System.Collections;
+using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
 using xDataService.Models;
 using xIdentityModels.Models;
+using xModels.Base;
 
 namespace xIdentityService.Interfaces
 {
     /// <summary>
     /// a Referenced Service is a Service which can Referenced to other Items ...
     /// </summary>
-    public interface IXBaseReferenced
+    public interface IXBaseReferenced<TEntity, TKey>
+    where TEntity : XBaseEntity<TKey>
     {
         /// <summary>
         /// Get Reference Identifier for Specified Provider and Specified Item ...
@@ -18,9 +21,9 @@ namespace xIdentityService.Interfaces
         /// <param name="providedFor"></param>
         /// <param name="forProvidedId"></param>
         /// <returns></returns>
-        string GetIdentifier<TKey>(
+        string GetIdentifier<TReferenceKey>(
             string providedFor,
-            TKey forProvidedId
+            TReferenceKey forProvidedId
         );
 
         /// <summary>
@@ -31,10 +34,10 @@ namespace xIdentityService.Interfaces
         /// <param name="id"></param>
         /// <param name="cancellationToken"></param>
         /// <returns></returns>
-        Task<bool> IsProvidedFor<TKey>(
+        Task<bool> IsProvidedFor<TReferenceKey>(
             string providedFor,
-            TKey forProvidedId,
-            Guid id,
+            TReferenceKey forProvidedId,
+            TKey id,
             CancellationToken cancellationToken = default
         );
 
@@ -49,10 +52,10 @@ namespace xIdentityService.Interfaces
         /// <param name="connectionId"></param>
         /// <param name="cancellationToken"></param>
         /// <returns></returns>
-        Task AddReference<TKey>(
+        Task AddReference<TReferenceKey>(
             string providedFor,
-            TKey forProvidedId,
-            Guid id,
+            TReferenceKey forProvidedId,
+            TKey id,
             int forIndex = 0,
             XUserClaimsInfoDto userInfo = null,
             string connectionId = null,
@@ -70,19 +73,28 @@ namespace xIdentityService.Interfaces
         /// <param name="connectionId"></param>
         /// <param name="cancellationToken"></param>
         /// <returns></returns>
-        Task RemoveReference<TKey>(
+        Task RemoveReference<TReferenceKey>(
             string providedFor,
-            TKey forProvidedId,
-            Guid id,
+            TReferenceKey forProvidedId,
+            TKey id,
             int forIndex = 0,
             XUserClaimsInfoDto userInfo = null,
             string connectionId = null,
             CancellationToken cancellationToken = default
         );
 
+        /// <summary>
+        /// Get Specified References ...
+        /// </summary>
+        /// <param name="providedFor"></param>
+        /// <param name="id"></param>
+        /// <param name="cancellationToken"></param>
+        /// <typeparam name="TReferenceKey"></typeparam>
+        /// <returns></returns>
         Task<IEnumerable<XReference<string>>> GetReferences(
-            Guid id,
-
+            string providedFor,
+            TKey id,
+            CancellationToken cancellationToken = default
         );
     }
 }
\ No newline at end of file
diff --git a/Interfaces/IXBaseReferencedController.cs b/Interfaces/IXBaseReferencedController.cs
index f607a55..dc28c17 100644
--- a/Interfaces/IXBaseReferencedController.cs
+++ b/Interfaces/IXBaseReferencedController.cs
@@ -1,6 +1,8 @@
+using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
+using xDataService.Models;
 using xModels.Base;
 
 namespace xIdentityService.Interfaces
@@ -58,6 +60,20 @@ namespace xIdentityService.Interfaces
             [FromQuery] object forProvidedId,
             [FromQuery] int forIndex = 0,
             CancellationToken cancellationToken = default
-        );        
+        );
+
+        /// <summary>
+        /// Retrieve References of Specified Itemfor providedFor ...
+        /// </summary>
+        /// <param name="id"></param>
+        /// <param name="providedFor"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        [HttpGet("{id}/References")]
+        Task<ActionResult<IEnumerable<XReference<string>>>> GetReferences(
+            [FromRoute] TKey id,
+            [FromQuery] string providedFor,
+            CancellationToken cancellationToken = default
+        );
     }
 }
\ No newline at end of file