Brophy, James J., author
McGraw-Hill, 1990
Buku Teks
Hanushek, Eric A., author
Academic Press, 1977
Buku Teks
Walpole, Ronald E., author
Prentice-Hall, 1993
Buku Teks
Hoffman, Joe D., author
CRC Press, 2001
Buku Teks
Mott, Joe L., author
Reston Publishing, 1983
Buku Teks