APA (7th ed.) Citation

Southwestern, Ellis, D., & Valentine, L. (1991). Business cycles and forecasting. Southwestern.

Chicago Style (17th ed.) Citation

Southwestern, D. Ellis, and L. Valentine. Business Cycles and Forecasting. Dallas: Southwestern, 1991.

MLA (8th ed.) Citation

Southwestern, et al. Business Cycles and Forecasting. Southwestern, 1991.