APA Style
Krugman, Paul R, Obstfeld, Maurice. (2013).
International economics : theory & policy 9th ed. (9th; Horizon Ed.).
Harlow:
.
Chicago Style
Krugman, Paul R, Obstfeld, Maurice.
International economics : theory & policy 9th ed..
9th; Horizon Ed.
Harlow:
,
2013.
Text.
MLA Style
Krugman, Paul R, Obstfeld, Maurice.
International economics : theory & policy 9th ed..
9th; Horizon Ed.
Harlow:
,
2013.
Text.
Turabian Style
Krugman, Paul R, Obstfeld, Maurice.
International economics : theory & policy 9th ed..
9th; Horizon Ed.
Harlow:
,
2013.
Print.