APA (7 वां संस्करण) प्रशस्ति पत्र

Krugman, P. R., & Obstfeld, M. (2009). International economics: Theory and policy (Eighth edition.). Pearson Addison-Wesley.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Krugman, Paul R., और Maurice Obstfeld. International Economics: Theory and Policy. Eighth edition. Boston: Pearson Addison-Wesley, 2009.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Krugman, Paul R., और Maurice Obstfeld. International Economics: Theory and Policy. Eighth edition. Pearson Addison-Wesley, 2009.