Burns, J. M., & Peltason, J. (1969). Government by the people (7th ed.). Prentice-Hall of India.
Dyfyniad Arddull ChicagoBurns, James Macgregor, and Jack Peltason. Government by the People. 7th ed. New Jersey: Prentice-Hall of India, 1969.
Dyfyniad MLABurns, James Macgregor, and Jack Peltason. Government by the People. 7th ed. Prentice-Hall of India, 1969.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.