APA (7th ed.) Citation

Coward, N. (2007). The letters of Noël Coward. Knopf.

Chicago Style (17th ed.) Citation

Coward, Noël. The Letters of Noël Coward. New York: Knopf, 2007.

MLA (9th ed.) Citation

Coward, Noël. The Letters of Noël Coward. Knopf, 2007.