Dyfyniad APA

(1971). The New book of knowledge: The children's encyclopedia. Grolier.

Dyfyniad Arddull Chicago

The New Book of Knowledge: The Children's Encyclopedia. New York: Grolier, 1971.

Dyfyniad MLA

The New Book of Knowledge: The Children's Encyclopedia. Grolier, 1971.

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