Dyfyniad APA

(1918). The Encyclopedia Americana: A library of universal knowledge. Encyclopedia Americana Corp..

Dyfyniad Arddull Chicago

The Encyclopedia Americana: A Library of Universal Knowledge. New York: Encyclopedia Americana Corp., 1918.

Dyfyniad MLA

The Encyclopedia Americana: A Library of Universal Knowledge. Encyclopedia Americana Corp., 1918.

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