Barnett, G. William
American Management Association, 2008
eBooks
Remley, Jim
American Management Association, 2005
eBooks
Kau, James B.
McGraw-Hill, 1985
Buku Teks
Shilling, James D.
South-Western, 2002
Buku Teks
Shenkel, William M.
Business Publications , 1980
Buku Teks