Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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