APA استشهاد

(2001). WHO drug ninformation, Vol.15.No.3&4,2001. World Health Organisation.

استشهاد بنمط شيكاغو

WHO Drug Ninformation, Vol.15.No.3&4,2001. Geneva: World Health Organisation, 2001.

MLA استشهاد

WHO Drug Ninformation, Vol.15.No.3&4,2001. World Health Organisation, 2001.