Dyfyniad APA

Walford, A. J. (1982). Walford's guide to reference material. Library Association.

Dyfyniad Arddull Chicago

Walford, Albert John. Walford's Guide to Reference Material. London: Library Association, 1982.

Dyfyniad MLA

Walford, Albert John. Walford's Guide to Reference Material. Library Association, 1982.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.