Gaya APA

Pratt, W, B., Taylor, P. (1990). Principles of Drug Action: The Basis of Pharmacology 3rd Ed. (3rd Ed.). Philadelphia: Churchill Livingstone, Inc..

Gaya MLA

Pratt, William, B.., Taylor, Palmer. "Principles of Drug Action: The Basis of Pharmacology 3rd Ed.". 3rd Ed. Philadelphia: Churchill Livingstone, Inc., 1990. Text.