Dyfyniad APA

Barack Obama. (2019). "Change We Can Believe in: Barack Obama's Plan to Renew America's Promise [Paperback] [Jan 01, 2009] Barack Obama" (1.). Canongate Books Ltd.

Dyfyniad Arddull Chicago

Barack Obama. "Change We Can Believe in: Barack Obama's Plan to Renew America's Promise [Paperback] [Jan 01, 2009] Barack Obama". 1. Canongate Books Ltd, 2019.

Dyfyniad MLA

Barack Obama. "Change We Can Believe in: Barack Obama's Plan to Renew America's Promise [Paperback] [Jan 01, 2009] Barack Obama". 1. Canongate Books Ltd, 2019.

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