APA (7th ed.) Citation

Drucker, H. M., Dunleavy, P., Gamble, A., & Peele, G. (1983). Developments in British politics. Macmillan.

Chicago Style (17th ed.) Citation

Drucker, H. M., Patrick Dunleavy, Andrew Gamble, and Gillian Peele. Developments in British Politics. London: Macmillan, 1983.

MLA (9th ed.) Citation

Drucker, H. M., et al. Developments in British Politics. Macmillan, 1983.