APA (7th ed.) Zitazioa

Friend, J. (2005). Planning under pressure: The strategic choice approach (3rded.). Elsevier.

Chicago Style (17th ed.) Zitazioa

Friend, John. Planning Under Pressure: The Strategic Choice Approach. 3rded. Amsterdam: Elsevier, 2005.

MLA (9th ed.) Zitazioa

Friend, John. Planning Under Pressure: The Strategic Choice Approach. 3rded. Elsevier, 2005.