Krugman, P. R., & Obstfeld, M. (1991). International economics: Theory and policy (2nd ed.). Harper Collins.
Chicago-čujuhus (17. p.)Krugman, Paul R., juo Maurice Obstfeld. International Economics: Theory and Policy. 2nd ed. New York: Harper Collins, 1991.
MLA-čujuhus (9. p.)Krugman, Paul R., juo Maurice Obstfeld. International Economics: Theory and Policy. 2nd ed. Harper Collins, 1991.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.