APA引文

Krugman, P. R. (2017). International Trade: Theory and Policy (10th.). Pearson.

Chicago Style (17th ed.) Citation

Krugman, Paul R. International Trade: Theory and Policy. 10th. Pearson, 2017.

MLA引文

Krugman, Paul R. International Trade: Theory and Policy. 10th. Pearson, 2017.

警告：這些引文格式不一定是100％准確.