diff --git a/aiida_optimade/routers/references.py b/aiida_optimade/routers/references.py
new file mode 100644
index 00000000..6a63465e
--- /dev/null
+++ b/aiida_optimade/routers/references.py
@@ -0,0 +1,69 @@
+from typing import Union
+
+from fastapi import APIRouter, Depends
+from starlette.requests import Request
+
+from aiida import orm
+
+from optimade.models import (
+    ErrorResponse,
+    ReferenceResource,
+    ReferenceResponseMany,
+    ReferenceResponseOne,
+)
+
+from aiida_optimade.query_params import EntryListingQueryParams, SingleEntryQueryParams
+from aiida_optimade.entry_collections import AiidaCollection
+from aiida_optimade.mappers import ReferenceMapper
+from aiida_optimade.utils import get_backend
+
+from .utils import get_entries, get_single_entry
+
+
+router = APIRouter()
+
+references = AiidaCollection(
+    orm.ReferenceData.objects, ReferenceResource, ReferenceMapper
+)
+
+
+@router.get(
+    "/references",
+    response_model=Union[ReferenceResponseMany, ErrorResponse],
+    response_model_skip_defaults=True,
+    tags=["Reference"],
+)
+def get_references(
+    request: Request,
+    params: EntryListingQueryParams = Depends(),
+    backend: orm.implementation.Backend = Depends(get_backend),
+):
+    return get_entries(
+        backend=backend,
+        collection=references,
+        response=ReferenceResponseMany,
+        request=request,
+        params=params,
+    )
+
+
+@router.get(
+    "/references/{entry_id}",
+    response_model=Union[ReferenceResponseOne, ErrorResponse],
+    response_model_skip_defaults=True,
+    tags=["Reference"],
+)
+def get_single_reference(
+    request: Request,
+    entry_id: int,
+    params: SingleEntryQueryParams = Depends(),
+    backend: orm.implementation.Backend = Depends(get_backend),
+):
+    return get_single_entry(
+        backend=backend,
+        collection=references,
+        entry_id=entry_id,
+        response=ReferenceResponseOne,
+        request=request,
+        params=params,
+    )
diff --git a/pytest.ini b/pytest.ini
index f912cf47..0cd57be9 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -2,4 +2,4 @@
 filterwarnings =
     ignore:.*PY_SSIZE_T_CLEAN will be required for '#' formats.*:DeprecationWarning
     ignore:.*"@coroutine" decorator is deprecated since Python 3.8, use "async def" instead.*:DeprecationWarning
-    ignore:Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working:DeprecationWarning
+    ignore:.*Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated.*:DeprecationWarning