Cochran, C. E. (1990). American public policy: An introduction (3rd ed.). St. Martin's Press.
Lua i Stíl Chicago (17ú heag.)Cochran, Clarke E. American Public Policy: An Introduction. 3rd ed. New York, NY: St. Martin's Press, 1990.
Lua MLA (8ú heag.)Cochran, Clarke E. American Public Policy: An Introduction. 3rd ed. St. Martin's Press, 1990.
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