APA Alıntı

 Krugman, P. R. (2015).  International economics: Theory and policy.  Pearson.

Chicago Stili Alıntı

 Krugman, Paul R.  International Economics: Theory and Policy.  Pearson, 2015.

MLA Alıntı

 Krugman, Paul R.  International Economics: Theory and Policy.  Pearson, 2015.