Bone, H. A., & Ranney, A. (1976). Politics and Voters (4th ed.). McGraw-Hill.
Cita Chicago (17th ed.)Bone, Hugh A., i Austin Ranney. Politics and Voters. 4th ed. New York: McGraw-Hill, 1976.
Cita MLA (9th ed.)Bone, Hugh A., i Austin Ranney. Politics and Voters. 4th ed. McGraw-Hill, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.