APA (7th ed.) Citation

Day, A. J., Degenhardt, H. W., & Maoláin, C. O. (1988). Political parties of the world (3rd ed.). Longman.

Chicago Style (17th ed.) Citation

Day, Alan J., Henry W. Degenhardt, and Ciarán O. Maoláin. Political Parties of the World. 3rd ed. Harlow: Longman, 1988.

MLA (9th ed.) Citation

Day, Alan J., et al. Political Parties of the World. 3rd ed. Longman, 1988.