Gaya APA

Allen, , L, V. (2011). Ansel’s Pharmaceutical Dosage Forms and Drug Delivery Systems (Far4) (9th ed.). Philadelphia: Wolters Kluwer.

Gaya MLA

Allen, , Loyd, V.. "Ansel’s Pharmaceutical Dosage Forms and Drug Delivery Systems (Far4)". 9th ed. Philadelphia: Wolters Kluwer, 2011. Text.