Dyfyniad APA

Thomas, H. (1981). An unfinished history of the world. London: H. Hamilton.

Dyfyniad Arddull Chicago

Thomas, Hugh. An Unfinished History of the World. London: H. Hamilton, 1981.

Dyfyniad MLA

Thomas, Hugh. An Unfinished History of the World. London: H. Hamilton, 1981.

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