APA (7th ed.) Citation

Lydon, K. R., & Hays, M. (1989). A birthday for Blue. A. Whitman.

Chicago Style (17th ed.) Citation

Lydon, Kerry Raines, and Michael Hays. A Birthday for Blue. Niles, Ill.: A. Whitman, 1989.

MLA (9th ed.) Citation

Lydon, Kerry Raines, and Michael Hays. A Birthday for Blue. A. Whitman, 1989.