Greenstain, F. I. (1970). The American party system and the American people (2nd ed.). Prentice-Hall.
Cita Chicago (17th ed.)Greenstain, Fred I. The American Party System and the American People. 2nd ed. Englewood Clifs, N. J.: Prentice-Hall, 1970.
Cita MLA (9th ed.)Greenstain, Fred I. The American Party System and the American People. 2nd ed. Prentice-Hall, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.