APA Alıntı

Krugman, P. R. O. (1997). International economics: Theory and policy (4.).

Chicago Stili Alıntı

Krugman, Paul R; Obstfeld. International Economics: Theory and Policy. 4. Addison-Wesley Publishing Co. Inc., Massachusetts, 1997.

MLA Alıntı

Krugman, Paul R; Obstfeld. International Economics: Theory and Policy. 4. 1997.