APA (7th ed.) Citation

Waugh, D., Gardner, D., & Bushell, T. (1999). Extensions (1. ed.). Thornes.

Chicago Style (17th ed.) Citation

Waugh, David, David Gardner, and Tony Bushell. Extensions. 1. ed. Cheltenham: Thornes, 1999.

MLA (9th ed.) Citation

Waugh, David, et al. Extensions. 1. ed. Thornes, 1999.