Johnston, T. L.
Cambridge, Mass Harvard University Press 1962,
Buku Teks
Kidwell, David S., author
John Wiley and Sons, 2013
Buku Teks
Mishkin, Frederick S., author
Harper-Collins, 1995
Buku Teks
Auerbach, Robert D., author
Macmillan, 1989
Buku Teks
Stigum, Marcia
Illinois Dow Jones- Irwin , 1983
Buku Teks