Buzgan, Turan
Islamic World Academic of Sciences, 2017
Artikel Jurnal
Byham, William C.
FT Press, 2002
Buku Teks SO
Arnold, Frank, 1924-1992
McGraw-Hill, 2012
Buku Teks SO
Riggs, Donald E.
Oryx Press, 1988
Buku Teks SO
Fulmer, Robert M.
[American Management Association, ], 2004
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