Gwartney, James D.
Economics Private and public choice
Dryden Press, 1995
 Buku Teks
Gwartney, James D.
Economics : private and public choice
Harcourt Brace Jovanovich, 1990
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Becker, William E.
A complement to choice an introduction to economics
Prentice-Hall, 1971
 Buku Teks
Gwartney, James D.
Economics private and public choice
The Reyden Press, 2000
 Buku Teks
Gwartney, James D.
Economics private and public choice
Harcourt Brace Jovanovich, 1987
 Buku Teks