Gaya APA

Ansel, H, C., Popovich, N, G. (1990). Pharmaceutical Dosage Froms and Drug delevery Systems (5). Philadelphia: Lea & Febiger.

Gaya MLA

Ansel, Howard, C.., Popovich, Nicholas, G.. "Pharmaceutical Dosage Froms and Drug delevery Systems". 5 Philadelphia: Lea & Febiger, 1990. Text.