Cita APA (7th ed.)

Cathcart, T., & Klein, D. (2008). Plato and a platypus walk into a bar: Understanding philosophy through jokes. Penguin Random House.

Cita Chicago (17th ed.)

Cathcart, Thomas, i Daniel Klein. Plato and a Platypus Walk into a Bar: Understanding Philosophy Through Jokes. New York: Penguin Random House, 2008.

Cita MLA (9th ed.)

Cathcart, Thomas, i Daniel Klein. Plato and a Platypus Walk into a Bar: Understanding Philosophy Through Jokes. Penguin Random House, 2008.