Weber, Jean E., author
Harper & Row, 1982
Buku Teks
Draper, Jean E., author
Harper & Row, 1972
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