एपीए उद्धरण

Walford, A. J. Guide to Reference Material (3rd ed.). The Library Association.

शिकागो स्टाइल उद्धरण

Walford, A J. Guide to Reference Material. 3rd ed. London: The Library Association.

एमएलए उद्धरण

Walford, A J. Guide to Reference Material. 3rd ed. The Library Association.