Dye, T. R. (2013). Understanding public policy (14th ed.). Pearson Education International.
Lua i Stíl Chicago (17ú heag.)Dye, Thomas R. Understanding Public Policy. 14th ed. Boston: Pearson Education International, 2013.
Lua MLA (9ú heag.)Dye, Thomas R. Understanding Public Policy. 14th ed. Pearson Education International, 2013.
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