Gaya APA

Allen, L, V. et al (2011). Ansel's Pharmaceutical Dosage Forms and Drug Delivery Systems e. 9 (9 ed). Philadelphia: Wolters Kluwer.

Gaya MLA

Allen, Loyd, V.. et al. "Ansel's Pharmaceutical Dosage Forms and Drug Delivery Systems e. 9". 9 ed Philadelphia: Wolters Kluwer, 2011. Text.