Dyfyniad APA

Hanna, P. (2003). You can sell it. Penguin Books.

Dyfyniad Arddull Chicago

Hanna, Paul. You Can Sell It. New Delhi: Penguin Books, 2003.

Dyfyniad MLA

Hanna, Paul. You Can Sell It. Penguin Books, 2003.

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