Wilson, J. Q., & DiIulio, J. J., Jr. (1995). American government: The essentials (6th ed.). D.C. Heath.
Lua i Stíl Chicago (17ú heag.)Wilson, James Q., agus John J. DiIulio, Jr. American Government: The Essentials. 6th ed. Lexington, Mass.: D.C. Heath, 1995.
Lua MLA (8ú heag.)Wilson, James Q., agus John J. DiIulio, Jr. American Government: The Essentials. 6th ed. D.C. Heath, 1995.
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