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.