Friedman, Milton, 1912-2006
The University of Chicago Press , 1953
Buku Teks
Khan, Muhammad Mansoor
The islamic foundation (great britain) , 1995
Buku Teks
Khan, M. Fahim,author
The Islamic Foundation , 1995
Buku Teks
Lipsey, Richard G.
Harper Collin, 1996
Buku Teks
Adreson, W. H. Locke
Prentice Hall of India, 1986
Buku Teks