APA (7th ed.) Citation

Harris, N. O., & Christen, A. G. (1990). Primary preventive dentistry. Appleton & Lange.

Chicago Style (17th ed.) Citation

Harris, Norman O., and Arden G. Christen. Primary Preventive Dentistry. Norwalk, CO: Appleton & Lange, 1990.

MLA (9th ed.) Citation

Harris, Norman O., and Arden G. Christen. Primary Preventive Dentistry. Appleton & Lange, 1990.