Ohtaki, Reiji
John Wiley & Sons, 2004
Buku Teks
Ivancevich, John M., author
McGraw-Hill , 2002
Buku Teks
Tan, Chwee Huat, editor
Pearson Prentice Hall, 2004
Buku Teks
Nankervis, Alan R., author
Thomas Nelson Australia, 1996
Buku Teks
Hickman, Gill Robinson, author
Harcourt, 2001
Buku Teks