Cita APA (7th ed.)

Collis, H., & Kohl, J. (1996). 101 American English riddles: Understanding language and culture through humor. Passportt Books.

Cita Chicago (17th ed.)

Collis, Harry, i Joe Kohl. 101 American English Riddles: Understanding Language and Culture Through Humor. Lincolnwood, Ill: Passportt Books, 1996.

Cita MLA (9th ed.)

Collis, Harry, i Joe Kohl. 101 American English Riddles: Understanding Language and Culture Through Humor. Passportt Books, 1996.