Cita APA (7th ed.)
Krugman, P. R. (1988). International economics: Theory and policy. Scott, Foresman and Company.
Cita Chicago (17th ed.)
Krugman, Paul R. International Economics: Theory and Policy. Boston: Scott, Foresman and Company, 1988.
Cita MLA (9th ed.)
Krugman, Paul R. International Economics: Theory and Policy. Scott, Foresman and Company, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.