edited by Raymond J. Chambers and G.W. Dean
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Buku Teks
edited by R. J. Chambers and G. W. Dean
Garland Publishing, 1986
Buku Teks
Harapan Bangsa Business School, 2012
Majalah, Jurnal, Buletin
Dickinson, John P.
Philip Allan , 1990
Buku Teks
Farrow, David
McGraw-Hill, 1994
Buku Teks