Dowling, Edward Thomas, author
McGraw-Hill, 1992
Buku Teks
Wheeler, Roger F., author
Ellis Horwood, 1981
Buku Teks
Saaty, Thomas L., author
McGraw-Hill, 1959
Buku Teks
Miller, Charles D., author
Scott, Foresman, 1969
Buku Teks
Beauchamp, Murray A., author
Random House , 1970
Buku Teks