Dyfyniad APA

(1997). McGraw-Hill encyclopedia of science and technology; Vol.2: APA - BOO. New York: McGraw-Hill.

Dyfyniad Arddull Chicago

McGraw-Hill Encyclopedia of Science and Technology; Vol.2: APA - BOO. New York: McGraw-Hill, 1997.

Dyfyniad MLA

McGraw-Hill Encyclopedia of Science and Technology; Vol.2: APA - BOO. New York: McGraw-Hill, 1997.

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