APA (7th ed.) Citation
Froyen, R. T., & Greer, D. F. (1989). Principles of Economics (1. ed.). Macmillan Publ. Co.
Chicago Style (17th ed.) Citation
Froyen, Richard T., and Douglas F. Greer. Principles of Economics. 1. ed. New York: Macmillan Publ. Co, 1989.
MLA (9th ed.) Citation
Froyen, Richard T., and Douglas F. Greer. Principles of Economics. 1. ed. Macmillan Publ. Co, 1989.
Warning: These citations may not always be 100% accurate.