Dyfyniad APA

World Health Organization. (2003). Concise International chemical Assessment Document; Hydrogen sulfide; Human Health Aspects. IOMS.

Dyfyniad Arddull Chicago

World Health Organization. Concise International Chemical Assessment Document; Hydrogen Sulfide; Human Health Aspects. Ginebra: IOMS, 2003.

Dyfyniad MLA

World Health Organization. Concise International Chemical Assessment Document; Hydrogen Sulfide; Human Health Aspects. IOMS, 2003.

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