Burns, J. M. (1942). Goverment by the people. New York: Prentice- Hall, Inc.
Dyfyniad Arddull ChicagoBurns, James MacGregor. Goverment By the People. New York: Prentice- Hall, Inc, 1942.
Dyfyniad MLABurns, James MacGregor. Goverment By the People. New York: Prentice- Hall, Inc, 1942.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.