Dyfyniad APA

Obama, B. (2020). A promised land (First edition.). Crown.

Dyfyniad Arddull Chicago

Obama, Barack. A Promised Land. First edition. New York: Crown, 2020.

Dyfyniad MLA

Obama, Barack. A Promised Land. First edition. Crown, 2020.

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