Gaya APA

Cathcart, T., Klein, D. (2000). Plato and a Platypus Walk into a Bar . . .: Understanding Philosophy Through Jokes . New York: Penguin Books.

Gaya MLA

Cathcart, Thomas., Klein, Daniel. "Plato and a Platypus Walk into a Bar . . .: Understanding Philosophy Through Jokes". New York: Penguin Books, 2000. Buku.