Dyfyniad APA

Thomas A Jefferson. (1993). FAO species identification guide: Marine mammals of the world. Rome: FAO.

Dyfyniad Arddull Chicago

Thomas A Jefferson. FAO Species Identification Guide: Marine Mammals of the World. Rome: FAO, 1993.

Dyfyniad MLA

Thomas A Jefferson. FAO Species Identification Guide: Marine Mammals of the World. Rome: FAO, 1993.

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