Pfefferbaum, R. (1987). Economics: Study guide (2nd ed.). Houghton Mifflin.
芝加哥风格引文Pfefferbaum, Rose. Economics: Study Guide. 2nd ed. Boston: Houghton Mifflin, 1987.
MLA引文Pfefferbaum, Rose. Economics: Study Guide. 2nd ed. Houghton Mifflin, 1987.
警告：这些引文格式不一定是100％准确.