APA (7th ed.) Citation

McConnell, C. R. (1984). Economics: Principles, problems, and policies (9th ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

McConnell, Campbell R. Economics: Principles, Problems, and Policies. 9th ed. New York [etc.]: McGraw-Hill, 1984.

MLA (9th ed.) Citation

McConnell, Campbell R. Economics: Principles, Problems, and Policies. 9th ed. McGraw-Hill, 1984.