Dyfyniad APA

Cowles Education Corporation. (1968). Cowles encyclopedia of nations. Cowles Education Corp.

Dyfyniad Arddull Chicago

Cowles Education Corporation. Cowles Encyclopedia of Nations. [New York]: Cowles Education Corp, 1968.

Dyfyniad MLA

Cowles Education Corporation. Cowles Encyclopedia of Nations. Cowles Education Corp, 1968.

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