APA (7th ed.) Citation

Whiting & Birch, Brown, A., & McCaughan, N. (1994). Groupwork. Whiting & Birch.

Chicago Style (17th ed.) Citation

Whiting & Birch, Allan Brown, and Nano McCaughan. Groupwork. London: Whiting & Birch, 1994.

MLA (8th ed.) Citation

Whiting & Birch, et al. Groupwork. Whiting & Birch, 1994.