Hill, M. J. (2013). The public policy process (6th ed.). Pearson.
Lua i Stíl Chicago (17ú heag.)Hill, Michael J. The Public Policy Process. 6th ed. New York ; Harlow: Pearson, 2013.
Lua MLA (8ú heag.)Hill, Michael J. The Public Policy Process. 6th ed. Pearson, 2013.
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