Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

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