Dyfyniad APA

(1964). The book of popular science. New York: Grolier Incorporated.

Dyfyniad Arddull Chicago

The Book of Popular Science. New York: Grolier Incorporated, 1964.

Dyfyniad MLA

The Book of Popular Science. New York: Grolier Incorporated, 1964.

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