APA (7th ed.) Citation

Wilson, A. (1961). The old men at the zoo. Secker & Warburg.

Chicago Style (17th ed.) Citation

Wilson, Angus. The Old Men at the Zoo. London: Secker & Warburg, 1961.

MLA (9th ed.) Citation

Wilson, Angus. The Old Men at the Zoo. Secker & Warburg, 1961.

Warning: These citations may not always be 100% accurate.