APA (7th ed.) Citation

Gupta, A. K., & By, B.. (1989). Introduction to pharmaceutics (2nd ed.). CBS.

Chicago Style (17th ed.) Citation

Gupta, Ashok K., and Bajaj By. Introduction to Pharmaceutics. 2nd ed. Delhi: CBS, 1989.

MLA (9th ed.) Citation

Gupta, Ashok K., and Bajaj By. Introduction to Pharmaceutics. 2nd ed. CBS, 1989.