APA (7th ed.) Citation

Whittaker, D. J. (1997). United nations in the contemporary world. Routledge.

Chicago Style (17th ed.) Citation

Whittaker, David J. United Nations in the Contemporary World. London: Routledge, 1997.

MLA (9th ed.) Citation

Whittaker, David J. United Nations in the Contemporary World. Routledge, 1997.