Cita APA (7th ed.)

Murray, J. (2003). A few short notes on tropical butterflies. Penguin Books.

Cita Chicago (17th ed.)

Murray, John. A Few Short Notes on Tropical Butterflies. London: Penguin Books, 2003.

Cita MLA (8th ed.)

Murray, John. A Few Short Notes on Tropical Butterflies. Penguin Books, 2003.