APA (7th ed.) Citation

Walford, A. J. (1966). Guide to reference material (2nd ed.). Library Association.

Chicago Style (17th ed.) Citation

Walford, A. J. Guide to Reference Material. 2nd ed. London: Library Association, 1966.

MLA (9th ed.) Citation

Walford, A. J. Guide to Reference Material. 2nd ed. Library Association, 1966.