House, Charles H., author
Stanford Business Books, 2009
Buku Teks
ITM Business School, 2008
Majalah, Jurnal, Buletin
Sea-Jin, Chang, author
Cambridge Cambridge University Press 2003
Buku Teks
Vagadia, Bharat, author
[Springer, ], 2012
eBooks
Duren, Peter L., author
Academic Press, 1970
Buku Teks