Beer, Lawrence A.,author
Business Expert, 2011
Buku Teks
Newstrom, John W.
McGraw-Hill, 1975
Buku Teks
Clemens, John K
Tian xia wen hua chu ban gu fen you xian gong si,, 1989
Buku Teks
Cain, Brian
Glorier International, 1999
Buku Referensi
Hatten, Timothy S.
South Western Cengage Learning, 2012
Buku Teks