APA (7th ed.) Citation

Capote, T. (1961). Breakfast at Tiffany's. Penguin Books.

Chicago Style (17th ed.) Citation

Capote, Truman. Breakfast at Tiffany's. Harmondsworth: Penguin Books, 1961.

MLA (9th ed.) Citation

Capote, Truman. Breakfast at Tiffany's. Penguin Books, 1961.