Dyfyniad APA

Wheeler, W. B., & Becker, S. D. (1994). Discovering the American past: A look at the evidence (3rd ed.). Houghton Mifflin Co..

Dyfyniad Arddull Chicago

Wheeler, William Bruce, and Susan D. Becker. Discovering the American Past: A Look at the Evidence. 3rd ed. Boston: Houghton Mifflin Co., 1994.

Dyfyniad MLA

Wheeler, William Bruce, and Susan D. Becker. Discovering the American Past: A Look at the Evidence. 3rd ed. Houghton Mifflin Co., 1994.

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