Dyfyniad APA

Donaldson, H. (1965). Coal. Published for the Nuffield Foundation by the Longmans/ Penguin Books.

Dyfyniad Arddull Chicago

Donaldson, H. Coal. London: Published for the Nuffield Foundation by the Longmans/ Penguin Books, 1965.

Dyfyniad MLA

Donaldson, H. Coal. Published for the Nuffield Foundation by the Longmans/ Penguin Books, 1965.

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