SAGE Publishing, 2019
Majalah, Jurnal, Buletin
Dennis P. Curtin, [et al] author
McGraw-Hill Book, 1998
Buku Teks SO
edited by Rory L. Chase
FS International Ltd. , 1994
Buku Teks SO
Turban, Efraim, 1930-
John Wiley & Sons, 2003
Buku Teks SO
Curtin, Dennis P.
McGraw-Hill, 1998
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