Steward, Rodney D.
John Wiley & Sons, 1982
Buku Teks
Matthews, Lawrence M., author
McGraw-Hill , 1983
Buku Teks
Staley, John D.
American Management Association , 1961
Buku Teks
Tse, John Y. D.
Macmilla, 1960
Buku Teks
Clugston, Richard
Gower Press, 1979
Buku Teks