APA引文

Pugel Thomas. A. (2011). International Economics (13th.). Tata Mcgraw Hill pub. co.

芝加哥风格引文

Pugel Thomas. A. International Economics. 13th. NewYork: Tata Mcgraw Hill pub. co, 2011.

MLA引文

Pugel Thomas. A. International Economics. 13th. Tata Mcgraw Hill pub. co, 2011.

警告：这些引文格式不一定是100％准确.