Jones,Robert R, & Seligmann, G. L. (1969). Sweep of American history. John Wiley.
Dyfyniad Arddull ChicagoJones,Robert R, and Gustav L. Seligmann. Sweep of American History. New York: John Wiley, 1969.
Dyfyniad MLAJones,Robert R, and Gustav L. Seligmann. Sweep of American History. John Wiley, 1969.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.