Dyfyniad APA

LEWIS. The Industrialist and the Mountaineer. West Virginia University Press.

Dyfyniad Arddull Chicago

LEWIS. The Industrialist and the Mountaineer. West Virginia University Press.

Dyfyniad MLA

LEWIS. The Industrialist and the Mountaineer. West Virginia University Press.

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