APA引文

KRUGMAN, P. R. (2012). International economics: Theory & policy ninth edition. Pearson Education Limited.

Chicago Style (17th ed.) Citation

KRUGMAN, Paul R. International Economics: Theory & Policy Ninth Edition. Pearson Education Limited, 2012.

MLA引文

KRUGMAN, Paul R. International Economics: Theory & Policy Ninth Edition. Pearson Education Limited, 2012.

警告：这些引文格式不一定是100％准确.