Friend, J. (2005). Planning under pressure: The strategic choice approach (3rded.). Elsevier.
Chicago-čujuhus (17. p.)Friend, John. Planning Under Pressure: The Strategic Choice Approach. 3rded. Amsterdam: Elsevier, 2005.
MLA-čujuhus (9. p.)Friend, John. Planning Under Pressure: The Strategic Choice Approach. 3rded. Elsevier, 2005.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.