Krugman, P. R., & Obstfeld, M. (2003). International economics: Theory and policy (6th ed.). Pearson Education Inc..
芝加哥风格引文Krugman, Paul R., 与 Maurice Obstfeld. International Economics: Theory and Policy. 6th ed. Boston ; New Delhi: Pearson Education Inc., 2003.
MLA引文Krugman, Paul R., 与 Maurice Obstfeld. International Economics: Theory and Policy. 6th ed. Pearson Education Inc., 2003.
警告：这些引文格式不一定是100％准确.