Cita APA

Krugman, P. R. 1. (2012). International economics: Theory and policy (9th. ed., global ed.). Harlow: Pearson Education Limited.

Citación estilo Chicago

Krugman, Paul R. 1953-. International Economics: Theory and Policy. 9th. ed., global ed. Harlow: Pearson Education Limited, 2012.

Cita MLA

Krugman, Paul R. 1953-. International Economics: Theory and Policy. 9th. ed., global ed. Harlow: Pearson Education Limited, 2012.