Dyfyniad APA

(2002). IPCS: Selected Nitro-and Nitro-oxy-polycyclic aromatic hydrocarbons. World Health Organisation.

Dyfyniad Arddull Chicago

IPCS: Selected Nitro-and Nitro-oxy-polycyclic Aromatic Hydrocarbons. Geneva: World Health Organisation, 2002.

Dyfyniad MLA

IPCS: Selected Nitro-and Nitro-oxy-polycyclic Aromatic Hydrocarbons. World Health Organisation, 2002.

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