Dyfyniad APA

American Society of Civil Engineers. Civil engineering. American Society of Civil Engineers.

Dyfyniad Arddull Chicago

American Society of Civil Engineers. Civil Engineering. New York, N.Y: American Society of Civil Engineers.

Dyfyniad MLA

American Society of Civil Engineers. Civil Engineering. American Society of Civil Engineers.

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