Dyfyniad APA

Lawson, A. W. Aircraft. Lawson Publishing Company.

Dyfyniad Arddull Chicago

Lawson, Alfred W. Aircraft. New York: Lawson Publishing Company.

Dyfyniad MLA

Lawson, Alfred W. Aircraft. Lawson Publishing Company.

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