diff --git a/breccia_mapper/settings.py b/breccia_mapper/settings.py
index 20a0aa8..795ae33 100644
--- a/breccia_mapper/settings.py
+++ b/breccia_mapper/settings.py
@@ -141,6 +141,11 @@ REST_FRAMEWORK = {
     'DEFAULT_PERMISSION_CLASSES': [
         'rest_framework.permissions.IsAuthenticated',
     ],
+    'DEFAULT_RENDERER_CLASSES': [
+        'rest_framework.renderers.JSONRenderer',
+        'rest_framework_csv.renderers.CSVRenderer',
+        'rest_framework.renderers.BrowsableAPIRenderer',
+    ],
 }
 
 
@@ -256,12 +261,3 @@ CONSTANCE_BACKEND = 'constance.backends.database.DatabaseBackend'
 BOOTSTRAP4 = {
     'include_jquery': 'full',
 }
-
-
-# Django Rest Framework settings for API
-
-REST_FRAMEWORK = {
-    'DEFAULT_RENDERER_CLASSES': [
-        'rest_framework_csv.renderers.CSVRenderer',
-    ]
-}
diff --git a/people/serializers.py b/people/serializers.py
index 3c98db3..b3f6c4f 100644
--- a/people/serializers.py
+++ b/people/serializers.py
@@ -14,9 +14,26 @@ class PersonSerializer(serializers.ModelSerializer):
             'pk',
             'name',
         ]
-        
+
+
+class MinimalPersonSerializer(serializers.ModelSerializer):
+    """
+    Serializer containing just the necessary fields to identify a :class:`Person`.
+
+    Used for nesting within other serializers.
+    """
+    class Meta:
+        model = models.Person
+        fields = [
+            'pk',
+            'name',
+        ]
+
         
 class RelationshipSerializer(serializers.ModelSerializer):
+    source = MinimalPersonSerializer()
+    target = MinimalPersonSerializer()
+
     class Meta:
         model = models.Relationship
         fields = [