APA引文

Krugman, P. R., Obstfeld, M., & Melitz, M. J. (2011). International economics: Theory and policy (Ninth edition.). Pearson Education South Asia.

Chicago Style (17th ed.) Citation

Krugman, Paul R., Maurice Obstfeld, and Mare J. Melitz. International Economics: Theory and Policy. Ninth edition. Singapore: Pearson Education South Asia, 2011.

MLA引文

Krugman, Paul R., et al. International Economics: Theory and Policy. Ninth edition. Pearson Education South Asia, 2011.