Dyfyniad APA

(1979). The NEW illustrated Columbia encyclopedia. Columbia University Press.

Dyfyniad Arddull Chicago

The NEW Illustrated Columbia Encyclopedia. Columbia University Press, 1979.

Dyfyniad MLA

The NEW Illustrated Columbia Encyclopedia. Columbia University Press, 1979.

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