Howlett, M. (2009). Studying public policy: Policy cycles & policy subsystems. Oxford University Pr..
Tohutoru Kātū Chicago (17th ed.)Howlett, Michael. Studying Public Policy: Policy Cycles & Policy Subsystems. Oxford: Oxford University Pr., 2009.
Tohutoro MLA (9th ed.)Howlett, Michael. Studying Public Policy: Policy Cycles & Policy Subsystems. Oxford University Pr., 2009.
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