Dyfyniad APA

(2004). The encyclopedia of U.S. presidential elections. New York: Franklin Watts.

Dyfyniad Arddull Chicago

The Encyclopedia of U.S. Presidential Elections. New York: Franklin Watts, 2004.

Dyfyniad MLA

The Encyclopedia of U.S. Presidential Elections. New York: Franklin Watts, 2004.

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