APA-referens (7:e uppl.)

Krugman , P. R. (2017). International Economics: Theory and Policy (8th.). Pearson Education.

Chicago-referens (17:e uppl.)

Krugman , Paul R. International Economics: Theory and Policy. 8th. Chennai: Pearson Education, 2017.

MLA-referens (9:e uppl.)

Krugman , Paul R. International Economics: Theory and Policy. 8th. Pearson Education, 2017.