Cita APA (7a ed.)

Library Association. editor, Day, A., Harvey, J. M., & Mullay, M. (1990). Walford's guide to reference material: 2, Social and historical sciences, philosophy and religion (5th ed.). Library Association.

Cita Chicago Style (17a ed.)

Library Association. editor, Alan Day, Joan Margaret Harvey, y Marilyn Mullay. Walford's Guide to Reference Material: 2, Social and Historical Sciences, Philosophy and Religion. 5th ed. London: Library Association, 1990.

Cita MLA (9a ed.)

Library Association. editor, et al. Walford's Guide to Reference Material: 2, Social and Historical Sciences, Philosophy and Religion. 5th ed. Library Association, 1990.