Não informado. (1981). Journal of Policy Analysis and Management. Association for Public Policy Analysis and Management.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Journal of Policy Analysis and Management. New York: Association for Public Policy Analysis and Management, 1981.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Journal of Policy Analysis and Management. Association for Public Policy Analysis and Management, 1981.
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