Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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