Jr., L. V. A., Popovich, N. G., & Ansel, H. C. (2011). Ansel's Pharmaceutical Dosage Forms and Drug Delivery Systems (9th ed.). Wolters Kluwer.

Jr., Loyd V. Allen, Nicholas G. Popovich, and Howard C. Ansel. Ansel's Pharmaceutical Dosage Forms and Drug Delivery Systems. 9th ed. Philadelphia, PA: Wolters Kluwer, 2011.

Jr., Loyd V. Allen, et al. Ansel's Pharmaceutical Dosage Forms and Drug Delivery Systems. 9th ed. Wolters Kluwer, 2011.