Cita APA (7a ed.)

McCullers, C. (1961). The heart is a lonely hunter. Penguin Books.

Cita Chicago Style (17a ed.)

McCullers, Carson. The Heart Is a Lonely Hunter. London [etc.]: Penguin Books, 1961.

Cita MLA (9a ed.)

McCullers, Carson. The Heart Is a Lonely Hunter. Penguin Books, 1961.