Gaya APA

al, A, J, A, J, E. (2007). Principles of Clinical Pharmacology, 2nd Ed. (2nd Ed.). : Elsevier.

Gaya MLA

al, Arthur, J., Atkinson, Jr.,, Et. "Principles of Clinical Pharmacology, 2nd Ed.". 2nd Ed. : Elsevier, 2007. Text.