Zimbalist, A. S., Sherman, H. J., & Brown, S. (1989). Comparing economic systems: A political-economic approach (Second edition.). Harcourt Brace Jovanovich.

Zimbalist, Andrew S., Howard J. Sherman, and Stuart Brown. Comparing Economic Systems: A Political-economic Approach. Second edition. San Diego: Harcourt Brace Jovanovich, 1989.

Zimbalist, Andrew S., et al. Comparing Economic Systems: A Political-economic Approach. Second edition. Harcourt Brace Jovanovich, 1989.