Davis, William S., author
Addison-Wesley, 1981
Buku Teks
Lucas, Henry C., author
McGraw-Hill, 1981
Buku Teks
O`Brien, James A., 1936-, author
Irwin, 1997
Buku Teks
Murdick, Robert G., author
Prentice-Hall, 1984
Buku Teks
Page, John R., 1949-, author
Prentice-Hall, 1987
Buku Teks