Long, Roberrt H.
Robert Morris Associates , 1990
Buku Teks
edited by Daniel A. DeSalvo and Jay Liebowitz
Prentice-Hall, 1990
Buku Teks
edited by Ben Du Boulay, David Hogg, Luc Steels
North-Holland, 1987
Buku Teks
edited by L.F. Pau
North Holland, 1987
Buku Teks
Luger, George F., author
The Benjamin/Cummings , 1989
Buku Teks