Parkin, M., Powell, M., & Matthews, K. (2008). Economics (Seventh edition.). Addison-Wesley.
芝加哥风格引文Parkin, Michael, Melanie Powell, 与 Kent Matthews. Economics. Seventh edition. Harlow, England ; Boston, MA: Addison-Wesley, 2008.
MLA引文Parkin, Michael, et al. Economics. Seventh edition. Addison-Wesley, 2008.
警告：这些引文格式不一定是100％准确.