Dyfyniad APA

Krugman, P. R., & Obstfeld, M. (1994). International economics: Theory and policy (3rd.ed.). Harper Collins.

Dyfyniad Arddull Chicago

Krugman, Paul R., and Maurice Obstfeld. International Economics: Theory and Policy. 3rd.ed. Harper: Harper Collins, 1994.

Dyfyniad MLA

Krugman, Paul R., and Maurice Obstfeld. International Economics: Theory and Policy. 3rd.ed. Harper Collins, 1994.

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