APA (7th ed.) Citation

Friel, J. C., & Friel, L. D. (1990). An adult child's guide to what is "normal". Health Communications.

Chicago Style (17th ed.) Citation

Friel, John C., and Linda D. Friel. An Adult Child's Guide to What Is "Normal". Deerfield Beach, Fla: Health Communications, 1990.

MLA (9th ed.) Citation

Friel, John C., and Linda D. Friel. An Adult Child's Guide to What Is "Normal". Health Communications, 1990.