APA aipamena

Krugman, P. R. (1994). International economics: Theory and policy. New York: HarperCollins College Publishers.

Chicago Style aipamena

Krugman, Paul R. International Economics: Theory and Policy. New York: HarperCollins College Publishers, 1994.

MLA aipamena

Krugman, Paul R. International Economics: Theory and Policy. New York: HarperCollins College Publishers, 1994.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.