Dyfyniad APA

WHO. (1977). WHO expert committee on biological standurdization. Geneva.

Dyfyniad Arddull Chicago

WHO. WHO Expert Committee on Biological Standurdization. Geneva, 1977.

Dyfyniad MLA

WHO. WHO Expert Committee on Biological Standurdization. Geneva, 1977.

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