Dyfyniad APA

(2003). IPCS: Polychlorinated biphenyls. World Health Organisation.

Dyfyniad Arddull Chicago

IPCS: Polychlorinated Biphenyls. Geneva: World Health Organisation, 2003.

Dyfyniad MLA

IPCS: Polychlorinated Biphenyls. World Health Organisation, 2003.

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