Commons, John R.
Macmillan, 1934
Buku Teks
McKenna, John R.
Harper and Row , 1971
Buku Teks
Lipsey, Richard G.
Harper Collin, 1996
Buku Teks
Adreson, W. H. Locke
Prentice Hall of India, 1986
Buku Teks
Samuelson, Paul Anthony, 1915-2009
McGraw-Hill, 1992
Buku Teks