Blackman, Maurice
John Wiley & Sons, 1975
Buku Teks SO
Auslander, David M.
Prentice-Hall, 1990
Buku Teks
edited by Samarjit Chakraborty and Jorg Eberspacher
Springer, 2012
eBooks
Fluss, Donna
American Management Association, 2005
eBooks
Alexander, Roy, 1925-
American Management Association;, 2009
eBooks