Ciriello, Marco, author
McGraw-Hill, 2002
Buku Teks
Walker, Theodore D., author
West Lafayette, Indiana: PDA, 1977
Buku Teks
Svensen, Carl L.
"New Jersey: D. Van Nostrand, 1962"
Buku Teks
Schneerer, William F., author
McGraw-Hill, 1967
Buku Teks
Earle, James H., author
Addison-Wesley, 1985
Buku Teks