Dyfyniad APA

Cent, 5. G. (2009). The 50th Law (1st.). Profile Book.

Dyfyniad Arddull Chicago

Cent, 50; Greene. The 50th Law. 1st. London: Profile Book, 2009.

Dyfyniad MLA

Cent, 50; Greene. The 50th Law. 1st. Profile Book, 2009.

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