Gardner, H. S. (1998). Comparative economic systems (2nd ed.). Harcourt.
芝加哥风格引文Gardner, H. Stephen. Comparative Economic Systems. 2nd ed. Orlando: Harcourt, 1998.
MLA引文Gardner, H. Stephen. Comparative Economic Systems. 2nd ed. Harcourt, 1998.
警告：这些引文格式不一定是100％准确.