Não informado. (1981). Journal of Policy Analysis and Management. Association for Public Policy Analysis and Management.
Chicago-referens (17:e uppl.)Não informado. Journal of Policy Analysis and Management. New York: Association for Public Policy Analysis and Management, 1981.
MLA-referens (8:e uppl.)Não informado. Journal of Policy Analysis and Management. Association for Public Policy Analysis and Management, 1981.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.