Added links for SQLAlchemy and WTForms.

docs/patterns/sqlalchemy.rst

@@ -188,3 +188,6 @@ You can also pass string of SQL statements to the
 
 >>> engine.execute('select * from users where id = :1', [1]).first()
 (1, u'admin', u'admin@localhost')
+
+For more information about SQLAlchemy, head over to the
+`website <http://sqlalchemy.org/>`_.

docs/patterns/wtforms.rst

@@ -107,3 +107,8 @@ takes advantage of the `_formhelpers.html` template:
       </dl>
       <p><input type=submit value=Register>
     </form>
+
+For more information about WTForms, head over to the `WTForms
+website`_.
+
+.. _WTForms website: http://wtforms.simplecodes.com/