Frantzich, S. E., & Percy, S. L. (1994). American government: The political game. Brown & Benchmark.
Lua i Stíl Chicago (17ú heag.)Frantzich, Stephen E., agus Stephen L. Percy. American Government: The Political Game. Madison, Wis.: Brown & Benchmark, 1994.
Lua MLA (8ú heag.)Frantzich, Stephen E., agus Stephen L. Percy. American Government: The Political Game. Brown & Benchmark, 1994.
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