Gwartney, James D.
Economics : private and public choice
Harcourt Brace Jovanovich, 1990
 Buku Teks
Gwartney, James D.
Economics private and public choice
Harcourt Brace Jovanovich, 1987
 Buku Teks
Gwartney, James D.
Economics Private and public choice
Dryden Press, 1995
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Becker, William E.
A complement to choice an introduction to economics
Prentice-Hall, 1971
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Atkinson, Lloyd C.
Economics, the science of choice
Richard D. Irwin, 1982
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