APA ציטוט

Walford, A. J. (1990). Walford's guide to reference material. London: Library Association Publishing.

Trích dẫn kiểu Chicago

Walford, A. J. Walford's Guide to Reference Material. London: Library Association Publishing, 1990.

ציטוט MLA

Walford, A. J. Walford's Guide to Reference Material. London: Library Association Publishing, 1990.