APA (7th ed.) Citation

Gregory, P. R., & Stuart, R. C. (1999). Comparative economic systems (6. ed.). Houghton Mifflin.

Chicago Style (17th ed.) Citation

Gregory, Paul R., and Robert C. Stuart. Comparative Economic Systems. 6. ed. Boston [u.a.]: Houghton Mifflin, 1999.

MLA (9th ed.) Citation

Gregory, Paul R., and Robert C. Stuart. Comparative Economic Systems. 6. ed. Houghton Mifflin, 1999.