Dyfyniad APA

American engineer and railroad journal. M.N. Forney.

Dyfyniad Arddull Chicago

American Engineer and Railroad Journal. New York: M.N. Forney.

Dyfyniad MLA

American Engineer and Railroad Journal. M.N. Forney.

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