Cita APA (7a ed.)

Krugman, P. R., & Obstfeld, M. (1994). International economics: Theory and policy (3rd ed.). Harper Collins.

Cita Chicago Style (17a ed.)

Krugman, Paul R., y Maurice Obstfeld. International Economics: Theory and Policy. 3rd ed. New York (N.Y.): Harper Collins, 1994.

Cita MLA (9a ed.)

Krugman, Paul R., y Maurice Obstfeld. International Economics: Theory and Policy. 3rd ed. Harper Collins, 1994.