Earle, James H., author
Addison-Wesley, 1994
Buku Teks
Bethune, James D., author
Pearson-Prentice Hall, 2006
Buku Teks
Foley, James D., author
Addison-Wesley, 1982
Buku Teks
Stitt, Fred A., author
New York: McGraw-Hill, 1984
Buku Teks
Bertoline, Gary R., author
McGraw - Hill , 1998
Buku Teks