WHO. (2011). The international pharmacopoeia (4th ed.). World Health Organization.
Chicago Style aipamenaWHO. The International Pharmacopoeia. 4th ed. Geneva: World Health Organization, 2011.
MLA aipamenaWHO. The International Pharmacopoeia. 4th ed. World Health Organization, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.