Gwartney, J. D. (1985). Essentials of Economics (Second Edition). ELSEVIER.
Cita Chicago Style (17a ed.)Gwartney, James D. Essentials of Economics (Second Edition). ELSEVIER, 1985.
Cita MLA (8a ed.)Gwartney, James D. Essentials of Economics (Second Edition). ELSEVIER, 1985.
Precaución: Estas citas no son 100% exactas.