More source links.
diff --git a/Doc/library/tempfile.rst b/Doc/library/tempfile.rst
index 5caea67..1e0a31f 100644
--- a/Doc/library/tempfile.rst
+++ b/Doc/library/tempfile.rst
@@ -12,6 +12,10 @@
pair: temporary; file name
pair: temporary; file
+**Source code:** :source:`Lib/tempfile.py`
+
+--------------
+
This module generates temporary files and directories. It works on all
supported platforms. It provides three new functions,
:func:`NamedTemporaryFile`, :func:`mkstemp`, and :func:`mkdtemp`, which should