APA (7th ed.) Citation

Look, L., & Heo, Y. (2001). Henry's first-moon birthday. Atheneum Books for Young Readers.

Chicago Style (17th ed.) Citation

Look, Lenore, and Yumi Heo. Henry's First-moon Birthday. New York: Atheneum Books for Young Readers, 2001.

MLA (8th ed.) Citation

Look, Lenore, and Yumi Heo. Henry's First-moon Birthday. Atheneum Books for Young Readers, 2001.