Dyfyniad APA

(1999). WHO expert committee on biological standardization (1997: Geneva, Switzerland): forrty-eighth report. World Health Organisation.

Dyfyniad Arddull Chicago

WHO Expert Committee on Biological Standardization (1997: Geneva, Switzerland): Forrty-eighth Report. Geneva: World Health Organisation, 1999.

Dyfyniad MLA

WHO Expert Committee on Biological Standardization (1997: Geneva, Switzerland): Forrty-eighth Report. World Health Organisation, 1999.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.