APA-referens

Krugman, P. R., & Obstfeld, M. (1996). International economics: Theory and policy (4th ed.). Addison Wesley.

Chicago-stil citat

Krugman, Paul R., och Maurice Obstfeld. International Economics: Theory and Policy. 4th ed. Massachusetts: Addison Wesley, 1996.

MLA-referens

Krugman, Paul R., och Maurice Obstfeld. International Economics: Theory and Policy. 4th ed. Addison Wesley, 1996.