Stroup, R. (1980). Coursebook for Economics (Second Edition). ELSEVIER.
芝加哥风格引文Stroup, Richard. Coursebook for Economics (Second Edition). ELSEVIER, 1980.
MLA引文Stroup, Richard. Coursebook for Economics (Second Edition). ELSEVIER, 1980.
警告：这些引文格式不一定是100％准确.