Agee, Warren Kendall, editor
1982
Buku Teks
Emery, Edwin, editor
Dood, Mead & Company, 1971
Buku Teks
Wilson, Stan Le Roy
McGraw-Hill, 1995
Buku Teks
Bittner, John R., 1943-
Prentice-Hall, 1980
Buku Teks
Francois, William E.
Grid Inc., 1977
Buku Teks