APA
Proffit W. R., . (1993). Contemporary orthodontics 2nd ed. [Place of publication not identified]: Mosby Year Book.
Chicago
Proffit William R, . 1993. Contemporary orthodontics 2nd ed. [Place of publication not identified]: Mosby Year Book.
Harvard
Proffit W. R., . (1993). Contemporary orthodontics 2nd ed. [Place of publication not identified]: Mosby Year Book.
MLA
Proffit William R, . Contemporary orthodontics 2nd ed. [Place of publication not identified]: Mosby Year Book. 1993.