APA Edition Citation

Krugman, P. R., & Obstfeld, M. International economics: Theory and policy (2.).

Chicago Edition Citation

Krugman, Paul R., and Maurice Obstfeld. International Economics: Theory and Policy. 2.

MLA Edition Citation

Krugman, Paul R., and Maurice Obstfeld. International Economics: Theory and Policy. 2.

Warning: These citations may not always be 100% accurate.