Krugman, P. R., & Obstfeld, M. (2006). International economics: Theory and policy (7th ed.). Addison-Wesley.
芝加哥风格引文Krugman, Paul R., 与 Maurice Obstfeld. International Economics: Theory and Policy. 7th ed. Boston, MA: Addison-Wesley, 2006.
MLA引文Krugman, Paul R., 与 Maurice Obstfeld. International Economics: Theory and Policy. 7th ed. Addison-Wesley, 2006.
警告：这些引文格式不一定是100％准确.