Gaya APA

(WHO), W, H, O. (1997). Quality assurance of pharmaceuticals : A compendium of guidelines and related materials. Vol 2, Updated Ed. (Vol. 2 Updated Ed.). : World Health Organization (WHO).

Gaya MLA

(WHO), World, Health, Organization. "Quality assurance of pharmaceuticals : A compendium of guidelines and related materials. Vol 2, Updated Ed.". Vol. 2 Updated Ed. : World Health Organization (WHO), 1997. Text.