Cita APA (7a ed.)

Library Association, Walford, A. J., Day, A., & Walsh, M. (1998). Walford's guide to reference material. Library Association.

Cita Chicago Style (17a ed.)

Library Association, A. J. Walford, Alan Day, y Michael Walsh. Walford's Guide to Reference Material. London: Library Association, 1998.

Cita MLA (9a ed.)

Library Association, et al. Walford's Guide to Reference Material. Library Association, 1998.