Emery, Edwin, editor
Dodd, Mead Company, 1968
Buku Teks
Agee, Warren Kendall, editor
1982
Buku Teks
Emery, Edwin, editor
Dood, Mead & Company, 1971
Buku Teks
Wilson, Stan Le Roy, author
McGraw-Hill, 1995
Buku Teks
Bittner, John R., 1943-, author
Prentice-Hall, 1980
Buku Teks