Brooke, E. W. (1966). The challenge of change: Crisis in our two-party system. Little, Brown.
Lua i Stíl Chicago (17ú heag.)Brooke, Edward William. The Challenge of Change: Crisis in Our Two-party System. Boston: Little, Brown, 1966.
Lua MLA (9ú heag.)Brooke, Edward William. The Challenge of Change: Crisis in Our Two-party System. Little, Brown, 1966.
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