World Health Organisation. (1988). WHO Expert Committee on Biological Standardization. World Health Organisation.
Chicago Edition CitationWorld Health Organisation. WHO Expert Committee on Biological Standardization. Geneva: World Health Organisation, 1988.
ציטוט MLAWorld Health Organisation. WHO Expert Committee on Biological Standardization. World Health Organisation, 1988.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.