APA (7th ed.) Zitazioa

Makridakis, S. G. (1990). Forescasting planning and strategy for the 21st. Century. The freee press.

Chicago Style (17th ed.) Zitazioa

Makridakis, Spyros G. Forescasting Planning and Strategy for the 21st. Century. Nueva York: The freee press, 1990.

MLA (9th ed.) Zitazioa

Makridakis, Spyros G. Forescasting Planning and Strategy for the 21st. Century. The freee press, 1990.