Dreher, George F., author
McGraw-Hill, 2001
Buku Teks
Mondy, R. Wayne, author
Erlangga, 2008
Buku Teks
Price, Alan
International Thomson Business Press , 1997
Buku Teks
Milkovich, George T., author
Tex Business Publications , 1985
Buku Teks
Schuster, Frederick E., author
Reston, 1985
Buku Teks