Παραπομπή σε μορφή APA (7η εκδ.)

Walford, A. J. (1989). Walford's guide to reference material Vol. 1: Science and technology (Fifth edition.). The Library Association.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Walford, Albert John. Walford's Guide to Reference Material Vol. 1: Science and Technology. Fifth edition. London: The Library Association, 1989.

Παραπομπή σε μορφή MLA (8th εκδ.)

Walford, Albert John. Walford's Guide to Reference Material Vol. 1: Science and Technology. Fifth edition. The Library Association, 1989.