L.D. White " According to him, public administration “consists of
all those operations having for their purpose the fulfillment
of
enforcement of public policies as declared by the competent authority"
Luther Gulick defined public administration in these words, “Administration has to do with getting things done … Public. Administration is that part of science of administration which has to do with the government and thus concerns itself primarily with the executive branch where the work of the government is done, though there are obviously problems also in connecting with the legislative and judicial branches”.
Percy McQueen “Public Administration is administration related to the operations of government whether local or central”.
Pfiffner – thought that public administration “consists of getting the work of government done by coordinating the efforts of the people so that they can work together to accomplish their set tasks. Administration embraces the activities which may be highly technical or specialized such as public health and building of bridges… It also involves managing, directing and supervising the activities of thousands, even millions of workers so that some order and efficiency may result from their efforts…..”
H. Simon "by Public Administration is meant in common usage of the activities of the executive branches of the national, States and local governments"