APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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