Gaya APA

Aspherheim, M, K. (1992). Pharmacology an Introductory Text (7th. ed.). Philadelphia: W. B. Saunders Company.

Gaya MLA

Aspherheim, Mary, Kaye. "Pharmacology an Introductory Text". 7th. ed. Philadelphia: W. B. Saunders Company, 1992. Text.