Yohe, G. W. (1985). Study guide to accompany Samuelson and Nordhaus Economics (12th.). McGraw-Hill Book.
芝加哥风格引文Yohe, Gary W. Study Guide to Accompany Samuelson and Nordhaus Economics. 12th. New York: McGraw-Hill Book, 1985.
MLA引文Yohe, Gary W. Study Guide to Accompany Samuelson and Nordhaus Economics. 12th. McGraw-Hill Book, 1985.
警告:这些引文格式不一定是100%准确.