APA (7th ed.) Citation

Saddington, G. H., & Cooper, E. (1976). Audiocassettes as library materials: An introd. Audiovisual librarian.

Chicago Style (17th ed.) Citation

Saddington, George H., and Eric Cooper. Audiocassettes as Library Materials: An Introd. London: Audiovisual librarian, 1976.

MLA (9th ed.) Citation

Saddington, George H., and Eric Cooper. Audiocassettes as Library Materials: An Introd. Audiovisual librarian, 1976.