Cathcart, T., & Klein, D. (2008). Plato and a platypus walk into a bar: Understanding philosophy through jokes. Penguin Random House.
Citazione stile Chigago Style (17a edizione)Cathcart, Thomas, e Daniel Klein. Plato and a Platypus Walk into a Bar: Understanding Philosophy Through Jokes. New York: Penguin Random House, 2008.
Citatione MLA (9a ed.)Cathcart, Thomas, e Daniel Klein. Plato and a Platypus Walk into a Bar: Understanding Philosophy Through Jokes. Penguin Random House, 2008.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.