Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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