APA (7th ed.) Citation

Henkes, K., & Yaccarino, D. (1998). Circle dogs. Greenwillow Books.

Chicago Style (17th ed.) Citation

Henkes, Kevin, and Dan Yaccarino. Circle Dogs. New York: Greenwillow Books, 1998.

MLA (8th ed.) Citation

Henkes, Kevin, and Dan Yaccarino. Circle Dogs. Greenwillow Books, 1998.