APA način citiranja (7. izdanje)

Krugman, P. R., & Obstfeld, M. (1991). International economics: Theory and policy (2nd ed.). Harper Collins.

Čikaški stil citiranja (17. izdanje)

Krugman, Paul R., i Maurice Obstfeld. International Economics: Theory and Policy. 2nd ed. New York: Harper Collins, 1991.

MLA način citiranja (9. izdanje)

Krugman, Paul R., i Maurice Obstfeld. International Economics: Theory and Policy. 2nd ed. Harper Collins, 1991.