Dyfyniad APA
Katzner, K. (1975). The languages of the world. Funk & Wagnalls.
Dyfyniad Arddull Chicago
Katzner, Kenneth. The Languages of the World. New York: Funk & Wagnalls, 1975.
Dyfyniad MLA
Katzner, Kenneth. The Languages of the World. Funk & Wagnalls, 1975.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.