APA (7th ed.) Citation

Friel, J. C., & Friel, L. D. (1999). The 7 worst things parents do. Health Communications.

Chicago Style (17th ed.) Citation

Friel, John C., and Linda D. Friel. The 7 Worst Things Parents Do. Deerfield Beach, Fla.: Health Communications, 1999.

MLA (9th ed.) Citation

Friel, John C., and Linda D. Friel. The 7 Worst Things Parents Do. Health Communications, 1999.