Olson, J. S. (1979). The ethnic dimension in American history. St. Martin's Press.
Dyfyniad Arddull ChicagoOlson, James Stuart. The Ethnic Dimension in American History. New York: St. Martin's Press, 1979.
Dyfyniad MLAOlson, James Stuart. The Ethnic Dimension in American History. St. Martin's Press, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.