Cita APA (7a ed.)

Hemingway, E. (1929). A farewell to arms. Penguin Books.

Cita Chicago Style (17a ed.)

Hemingway, Ernest. A Farewell to Arms. London: Penguin Books, 1929.

Cita MLA (8a ed.)

Hemingway, Ernest. A Farewell to Arms. Penguin Books, 1929.