APA Style

Allen, L, V. et al (2005). Ansel's Pharmaceutical Dosage Forms and Drug Delivery Systems (8). New York: Lippincott Williams and Wilkins.

MLA Style

Allen, Loyd, V.. et al. "Ansel's Pharmaceutical Dosage Forms and Drug Delivery Systems". 8 New York: Lippincott Williams and Wilkins, 2005. Text.