Solomon, Cynthia, author
American Management Association, 2009
eBooks
Prigent, Jean-Luc, author
Chapman & Hall/CRC , 2007
Buku Teks
Bridgwood, Barry, author
Taylor and Francis, 2009
Buku Teks
Lindsay, Sandie, author
John Wiley & Sons, 1992
Buku Teks
U.S Dep.t of Commerce, 1974
Buku Teks