Cita APA (7a ed.)

KRUGMAN, P. R. (2012). International economics: Theory & policy ninth edition. Pearson Education Limited.

Cita Chicago Style (17a ed.)

KRUGMAN, Paul R. International Economics: Theory & Policy Ninth Edition. Pearson Education Limited, 2012.

Cita MLA (8a ed.)

KRUGMAN, Paul R. International Economics: Theory & Policy Ninth Edition. Pearson Education Limited, 2012.