Gwartney, J. D. (1985). Essentials of Economics (Second Edition). ELSEVIER.
芝加哥风格引文Gwartney, James D. Essentials of Economics (Second Edition). ELSEVIER, 1985.
MLA引文Gwartney, James D. Essentials of Economics (Second Edition). ELSEVIER, 1985.
警告：这些引文格式不一定是100％准确.