Hughes, G. David, author
Addison-Wesley, 1983
Buku Teks
Spiro, Rosann L., author
McGraw-Hill-Irwin, 2003
Buku Teks
Canfield, Bertrand R., author
Prentice-Hall, 1961
Buku Teks
Abu Hilwa Aijawa, author
Restu Agung, 2005
Buku Teks
Jordan, Jason, author
McGraw-Hill, 2012
Buku Teks