Cita APA (7a ed.)

Krugman, P. R., Obstfeld, M., & Melitz, M. J. (2012). International economics: Theory & policy (9th., global ed.). Pearson.

Cita Chicago Style (17a ed.)

Krugman, Paul R., Maurice Obstfeld, y Marc J. Melitz. International Economics: Theory & Policy. 9th., global ed. Boston, Mass. [u.a.]: Pearson, 2012.

Cita MLA (9a ed.)

Krugman, Paul R., et al. International Economics: Theory & Policy. 9th., global ed. Pearson, 2012.