Dyfyniad APA

Krugman, P. R. (1988). International economics: Theory and policy. Scott, Foresman and Company.

Dyfyniad Arddull Chicago

Krugman, Paul R. International Economics: Theory and Policy. Boston: Scott, Foresman and Company, 1988.

Dyfyniad MLA

Krugman, Paul R. International Economics: Theory and Policy. Scott, Foresman and Company, 1988.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.