Cita APA (7a ed.)

Orwell, G. (1989). Animal farm: A fairy story. Penguin Books.

Cita Chicago Style (17a ed.)

Orwell, George. Animal Farm: A Fairy Story. London [etc.]: Penguin Books, 1989.

Cita MLA (9a ed.)

Orwell, George. Animal Farm: A Fairy Story. Penguin Books, 1989.