Nichols, R. F., & Nichols, J. P. (1943). A short history of American democracy. D. Appleton-Century Co.
Dyfyniad Arddull ChicagoNichols, Roy F., and Jeannette Paddock Nichols. A Short History of American Democracy. New York, London: D. Appleton-Century Co, 1943.
Dyfyniad MLANichols, Roy F., and Jeannette Paddock Nichols. A Short History of American Democracy. D. Appleton-Century Co, 1943.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.