Krugman , P. R. (2017). International Economics: Theory and Policy (8th.). Pearson Education.
芝加哥风格引文Krugman , Paul R. International Economics: Theory and Policy. 8th. Chennai: Pearson Education, 2017.
MLA引文Krugman , Paul R. International Economics: Theory and Policy. 8th. Pearson Education, 2017.
警告：这些引文格式不一定是100％准确.