APA (7th ed.) Citation

Spencer, M. H., & Amos, O. M. (1993). Contemporary economics (8th ed.). Worth Publishers.

Chicago Style (17th ed.) Citation

Spencer, Miltone H., and Orley M. Amos. Contemporary Economics. 8th ed. New York: Worth Publishers, 1993.

MLA (9th ed.) Citation

Spencer, Miltone H., and Orley M. Amos. Contemporary Economics. 8th ed. Worth Publishers, 1993.