Meriam, James L., author
John Wiley & Sons, 2008
Buku Teks
Sandor, Bela I. (Bela Imre), author
Prentice-Hall, 1983
Buku Teks
Cook, David I., author
International Textbook Company, 1960
Buku Teks
Bedford, Anthony, author
Prentice Hall - Pearson, 2005
Buku Teks
Gray, Gary L, author
McGraw-Hill, 2010
Buku Teks