APA (7th ed.) Citation

Makridakis, S. G. (1990). Forecasting , Planning and strategy for the 21st century. the free press.

Chicago Style (17th ed.) Citation

Makridakis, Spyros G. Forecasting , Planning and Strategy for the 21st Century. New York: the free press, 1990.

MLA (9th ed.) Citation

Makridakis, Spyros G. Forecasting , Planning and Strategy for the 21st Century. the free press, 1990.