APA (7th ed.) Citation

Proffit, W. R., Fields, H. W., Jr, & Sarver, D. M. Contemporary orthodontics (Fourth edition.).

Chicago Style (17th ed.) Citation

Proffit, William R., Henry W. Fields, Jr, and David M. Sarver. Contemporary Orthodontics. Fourth edition.

MLA (9th ed.) Citation

Proffit, William R., et al. Contemporary Orthodontics. Fourth edition.