Beardshaw, J., & Brewster, D. (1992). Economics: A student's guide (4th ed.). Pearson education.
芝加哥风格引文Beardshaw, John, 与 David Brewster. Economics: A Student's Guide. 4th ed. Harlow: Pearson education, 1992.
MLA引文Beardshaw, John, 与 David Brewster. Economics: A Student's Guide. 4th ed. Pearson education, 1992.
警告：这些引文格式不一定是100％准确.