Barnes, Donald L., author
Burgess, 1969
Buku Teks
Weiss, Leonard W., author
John Wiley & Sons, 1980
Buku Teks
O`Leary, Dianne P., author
Society for Industrial and Applied Mathematics, 2009
eBooks
Veatch, Robert M., author
Oxford University Press, 2008
Buku Teks
edited by Elizabeth Marting and Albert Newgardsen
International Management Association, 1957
Buku Teks