(1977). The Delphi Method: Techniques and applications. Addison-wesley.
Chicago-čujuhus (17. p.)The Delphi Method: Techniques and Applications. London: Addison-wesley, 1977.
MLA-čujuhus (9. p.)The Delphi Method: Techniques and Applications. Addison-wesley, 1977.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.