Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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