Hyman, David N.
Study guide for use with economics
Richard D. Irwin, 1971
 Buku Teks
Leftwich, Richard H.
Study guide to accompany economics of sosial issues
United States of America, 1984
 Buku Teks
Samuelson, Paul Anthony, 1915-2009
Economics
McGraw-Hill, 2010
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Lipsey, Richard G.
Economics
Harper Collin, 1996
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Albrecht, William P.
Economics
Prentice-Hall, 1979
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