Friedman, David D.
South-Western Publishing, 1986
Buku Teks
Hirshleifer, Jack, author
Prentice-Hall, 1998
Buku Teks
Dooley, Peter C.
Appleton-Century-Crofts, 1973
Buku Teks
Mansfield, Edwin, author
W.W. Norton, 1982
Buku Teks
Friedman, Milton, 1912-2006, author
llinois Aldine Publishing, 1962
Buku Teks