Makridakis, S. G. (1990). Forescasting planning and strategy for the 21st. Century. The freee press.
Cita Chicago (17th ed.)Makridakis, Spyros G. Forescasting Planning and Strategy for the 21st. Century. Nueva York: The freee press, 1990.
Cita MLA (9th ed.)Makridakis, Spyros G. Forescasting Planning and Strategy for the 21st. Century. The freee press, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.