Project management handbook
edited by David L. Cleland and William R. King
Van Nostrand Reinhold, 1983
 Buku Teks
Hayes, James L.
Memos for management leadership
Amacom , 1983
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Huseman, Richard C.
Readings in interpersonal & organizational communication
Allyn and Bacon, 1977
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Bernard, Chester I.
The functions of the executive
Harvard University Press , 1966
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McNichols, Thomas J.
Policymaking and executive action
McGraw-Hill, 1983
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