APA Style

Allen, L, V. et al (2015). Ansel's Pharmaceutical Dosage Forms and Drug Delivery Systems (Ninth ed.). New Delhi, India: Wolters Kluwer.

MLA Style

Allen, Lody, V. et al. "Ansel's Pharmaceutical Dosage Forms and Drug Delivery Systems". Ninth ed. New Delhi, India: Wolters Kluwer, 2015. Text.