APA (7th ed.) Citation

Ruffin, R. J., & Gregory, P. R. (1983). Principles of microeconomics. Scott, Foresman and Company.

Chicago Style (17th ed.) Citation

Ruffin, Roy J., and Paul R. Gregory. Principles of Microeconomics. Glenview, Illinois: Scott, Foresman and Company, 1983.

MLA (9th ed.) Citation

Ruffin, Roy J., and Paul R. Gregory. Principles of Microeconomics. Scott, Foresman and Company, 1983.