APA (7th ed.) Citation

Simonsen, R. J. (1991). Dentistry in the 21st century: A global perspective. Quintessence.

Chicago Style (17th ed.) Citation

Simonsen, Richard J. Dentistry in the 21st Century: A Global Perspective. Chicago: Quintessence, 1991.

MLA (9th ed.) Citation

Simonsen, Richard J. Dentistry in the 21st Century: A Global Perspective. Quintessence, 1991.

Warning: These citations may not always be 100% accurate.