APA (7th ed.) Citation
Gregory, P. R. (1990). Essentials of Economics (2. ed.). Scott, Foresman and Co.
Chicago Style (17th ed.) Citation
Gregory, Paul R. Essentials of Economics. 2. ed. Glenview: Scott, Foresman and Co, 1990.
MLA (9th ed.) Citation
Gregory, Paul R. Essentials of Economics. 2. ed. Scott, Foresman and Co, 1990.
Warning: These citations may not always be 100% accurate.