Dyfyniad APA

Ferguson,Nail. (2013). The Great Degeneration: How Institutions Decay and Economies Die. Penguin press.

Dyfyniad Arddull Chicago

Ferguson,Nail. The Great Degeneration: How Institutions Decay and Economies Die. New York: Penguin press, 2013.

Dyfyniad MLA

Ferguson,Nail. The Great Degeneration: How Institutions Decay and Economies Die. Penguin press, 2013.

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