Borchard, David C., author
American Management Association, 2008
eBooks
Bryan Lo`s, author
Awesome Books Publishing SDN BHN, 2002
Buku Teks
Henderson, David R., author
Prentice-Hall, 2002
Buku Teks
Guyer, Paul, author
Cambridge University Press, 2000
Buku Teks
Malkani, Vikas, author
Gramedia, 2004
Buku Teks