Friedman, Milton, 1912-2006, author
Essays in positive economics / Milton Friedman
The University of Chicago Press , 1953
 Buku Teks
Lee, George
Economics by objectives : basic economic theories and apllications / George Lee
Fong Brothers Publishing , 1989
 Buku Teks
Lee, George
Economics by objectives: basic economic theories and applications/George Lee
California Fong Brothers , 1989
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Lipsey, Richard G., 1928-, author
An Introduction to positive economics/ Richard G. Lipsey
Weidenfeld and Nicolson, 1972
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Baumol, William J., author
Economics : principles and policy
Harcourt, Brace Jovanovich College Publishers, 1985
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