APA引文

Krugman,Paul R, & Obstfeld,Maurice. (1997). International economics: Theory and policy. Addison - Wesley.

Chicago Edition Citation

Krugman,Paul R, and Obstfeld,Maurice. International Economics: Theory and Policy. New York: Addison - Wesley, 1997.

MLA引文

Krugman,Paul R, and Obstfeld,Maurice. International Economics: Theory and Policy. Addison - Wesley, 1997.

警告：這些引文格式不一定是100％准確.