Meyer, Peter
American Management Association, 2000
Buku Teks
McGraw-Hill , 1986
Buku Teks
Becker, Brian E., author
Harvard Bussines School Press, 2001
Buku Teks
Weske, Mathias, author
[, Springer-Verlag], 2012
eBooks
Allen, Jane Elizabeth
Addison-Wesley, 1987
Buku Teks