APA (7th ed.) Citation

Silk, P., & Walters, R. (1989). How Parliament works (2nd ed.). Longman.

Chicago Style (17th ed.) Citation

Silk, Paul, and Rhodri Walters. How Parliament Works. 2nd ed. London: Longman, 1989.

MLA (9th ed.) Citation

Silk, Paul, and Rhodri Walters. How Parliament Works. 2nd ed. Longman, 1989.