APA (7th ed.) Citation

Christen, A. G., & Klein, J. A. (1997). Tobacco and your oral health. Quintessence Pub..

Chicago Style (17th ed.) Citation

Christen, Arden G., and Jennifer A. Klein. Tobacco and Your Oral Health. Chicago, Ill.: Quintessence Pub., 1997.

MLA (9th ed.) Citation

Christen, Arden G., and Jennifer A. Klein. Tobacco and Your Oral Health. Quintessence Pub., 1997.