Dyfyniad APA

(2003). IPCS: Hydrogen sulfide- human health aspects. World Health Organisation.

Dyfyniad Arddull Chicago

IPCS: Hydrogen Sulfide- Human Health Aspects. Geneva: World Health Organisation, 2003.

Dyfyniad MLA

IPCS: Hydrogen Sulfide- Human Health Aspects. World Health Organisation, 2003.

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