Cita APA (7a ed.)

Makridakis, S. G. (1990). Forecasting, planning, and strategy for the 21st century. Free Press ; Collier Macmillan.

Cita Chicago Style (17a ed.)

Makridakis, Spyros G. Forecasting, Planning, and Strategy for the 21st Century. New York : London: Free Press ; Collier Macmillan, 1990.

Cita MLA (9a ed.)

Makridakis, Spyros G. Forecasting, Planning, and Strategy for the 21st Century. Free Press ; Collier Macmillan, 1990.