APA引文

Gregory, P. R. (1999). Comparative economic systems. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Gregory, Paul R. Comparative Economic Systems. Houghton Mifflin, 1999.

MLA引文

Gregory, Paul R. Comparative Economic Systems. Houghton Mifflin, 1999.

警告：这些引文格式不一定是100％准确.