8Caldwell L K,Methodology in the theory of public administration.In:Charlesworth(ed),Scope of Public Administration.Philadelphia:American Academy of Political and Social Science,1968.205-222.
10Philip S.Kronenberg.,The Scientific and Moral Authority of Empirical Theory of Public Administration,in Frank Marini.(ed),Toward a New Public Administration:The Minnow brook Perspective,Scranton,PA:Chandler,1971.190-225.