GWARTNEY, J. D., & STROUP, R. (1983). Microeconomics: Private and public choice.--Ed.3. Academic Press.

GWARTNEY, James D., and Richard STROUP. Microeconomics: Private and Public Choice.--Ed.3. New York: Academic Press, 1983.

GWARTNEY, James D., and Richard STROUP. Microeconomics: Private and Public Choice.--Ed.3. Academic Press, 1983.