Cita APA (7a ed.)

Wodehouse, P. G. (1961). Pigs have wings. Penguin Books.

Cita Chicago Style (17a ed.)

Wodehouse, P. G. Pigs Have Wings. Harnondsworth: Penguin Books, 1961.

Cita MLA (9a ed.)

Wodehouse, P. G. Pigs Have Wings. Penguin Books, 1961.