Bruce D. Mudget [and others]
Alexander Hamilton Institute, 1962
Buku Teks
Mowbray, Albert H.
McGraw-Hill, 1955
Buku Teks
Samuelson, Paul Anthony, 1915-2009
McGraw-Hill, 2010
Buku Teks
Sloman, John
Harvester Wheatsheaf, 1994
Buku Teks
Lipsey, Richard G.
Harper Collin, 1996
Buku Teks