Dyfyniad APA

(2000). IPCS: Human exposure assessment. World Health Organisation.

Dyfyniad Arddull Chicago

IPCS: Human Exposure Assessment. Geneva: World Health Organisation, 2000.

Dyfyniad MLA

IPCS: Human Exposure Assessment. World Health Organisation, 2000.

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