Bennett, Jeffrey O., author
Pearson - Addison Wesley, 2009
Buku Teks
Huntsberger, David V., author
Allyn and Bacon, 1980
Buku Teks
Kaplan, Robert M., author
Allyn and Bacon , 1987
Buku Teks
Waugh, Albert E.
McGraw-Hill, 1952
Buku Teks
Adkins, Dorothy C., author
Charles E. Merrill Books , 1964
Buku Teks