Gaya APA

Washington, N. et al (2001). Physiological Pharmaceutics : Barriers to Drug Absroption, 2nd Ed. (2nd Ed.). : Taylor & Francis.

Gaya MLA

Washington, Neena. et al. "Physiological Pharmaceutics : Barriers to Drug Absroption, 2nd Ed.". 2nd Ed. : Taylor & Francis, 2001. Text.