Dyfyniad APA

(1960). McGraw-Hill encyclopedia of science and technology: T9. New York: McGraw-Hill.

Dyfyniad Arddull Chicago

McGraw-Hill Encyclopedia of Science and Technology: T9. New York: McGraw-Hill, 1960.

Dyfyniad MLA

McGraw-Hill Encyclopedia of Science and Technology: T9. New York: McGraw-Hill, 1960.

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