APA Style
Krugman, Paul R. (2012).
International economics: theory & policy (9th).
London:
.
Chicago Style
Krugman, Paul R.
International economics: theory & policy.
9th
London:
,
2012.
Text.
MLA Style
Krugman, Paul R.
International economics: theory & policy.
9th
London:
,
2012.
Text.
Turabian Style
Krugman, Paul R.
International economics: theory & policy.
9th
London:
,
2012.
Print.