Traister, John E.
Reston Publishing , 1979
Buku Teks
Baer, Chales J., author
McGraw-Hill, 1980
Buku Teks
Carmody, Emmett J.
Oklahoma: CAD Press, c1989
Buku Teks
Snow, Charles W., author
Prentice-Hall, 1976
Buku Teks
Bethune, James D., author
Prentice-Hall, 1980
Buku Teks