Krugman, P. R. (1988). International economics: Theory and policy. Scott, Foresman and Company.
Lua i Stíl Chicago (17ú heag.)Krugman, Paul R. International Economics: Theory and Policy. Boston: Scott, Foresman and Company, 1988.
Lua MLA (9ú heag.)Krugman, Paul R. International Economics: Theory and Policy. Scott, Foresman and Company, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.