Patel, Alpesh B, author
Palgrave Macmillan, 2005
Buku Teks
Viskanta, Tadas, author
McGraw-Hill, 2012
Buku Teks
Kiernan, Matthew J., author
American Management Association;, 2009
eBooks
Peterson, Richard J., author
McGraw-Hill, 2001
Buku Teks
Radcliffe, Robert C.
Addison-Wesley, 1997
Buku Teks