APA (7th ed.) Citation

DiGregorio, G. J., & Barbieri, E. J. (1990). Handbook of commonly prescribed drugs (5th ed.). Medical Surveillance.

Chicago Style (17th ed.) Citation

DiGregorio, G. John, and Edward J. Barbieri. Handbook of Commonly Prescribed Drugs. 5th ed. West Chester PA: Medical Surveillance, 1990.

MLA (9th ed.) Citation

DiGregorio, G. John, and Edward J. Barbieri. Handbook of Commonly Prescribed Drugs. 5th ed. Medical Surveillance, 1990.