APA (7th ed.) Citation

Luard, E. (1979). The United Nations, how it works and what it does. Macmillan.

Chicago Style (17th ed.) Citation

Luard, Evan. The United Nations, How It Works and What It Does. London: Macmillan, 1979.

MLA (9th ed.) Citation

Luard, Evan. The United Nations, How It Works and What It Does. Macmillan, 1979.