एपीए उद्धरण

Krugman, P. R. (2003). Study Guide to accompany international economics: Theory and policy. Boston: Addison Wesley.

शिकागो स्टाइल उद्धरण

Krugman, Paul R. Study Guide to Accompany International Economics: Theory and Policy. Boston: Addison Wesley, 2003.

एमएलए उद्धरण

Krugman, Paul R. Study Guide to Accompany International Economics: Theory and Policy. Boston: Addison Wesley, 2003.