Dyfyniad APA

(1963). The world book encyclopedia: L. Chicago: Field enterprises educational corporation.

Dyfyniad Arddull Chicago

The World Book Encyclopedia: L. Chicago: Field enterprises educational corporation, 1963.

Dyfyniad MLA

The World Book Encyclopedia: L. Chicago: Field enterprises educational corporation, 1963.

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