Samuelson, Paul Anthony, 1915-2009, author
McGraw-Hill, 2010
Buku Teks
Sloman, John, author
Harvester Wheatsheaf, 1994
Buku Teks
Lipsey, Richard G., author
Harper Collin, 1996
Buku Teks
Albrecht, William P., author
Prentice-Hall, 1979
Buku Teks
Adreson, W. H. Locke, author
Prentice Hall of India, 1986
Buku Teks