Wiiliam Bruce Wheeler. (1994). Discovering the American past: A look at the evidence; Vol.1: to 1877. Boston, Masachusetts: Houghton Mifflin.
Dyfyniad Arddull ChicagoWiiliam Bruce Wheeler. Discovering the American Past: A Look At the Evidence; Vol.1: To 1877. Boston, Masachusetts: Houghton Mifflin, 1994.
Dyfyniad MLAWiiliam Bruce Wheeler. Discovering the American Past: A Look At the Evidence; Vol.1: To 1877. Boston, Masachusetts: Houghton Mifflin, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.