(1977). The Delphi Method: Techniques and applications. Addison-wesley.
Čikaški stil citiranja (17. izdanje)The Delphi Method: Techniques and Applications. London: Addison-wesley, 1977.
MLA način citiranja (9. izdanje)The Delphi Method: Techniques and Applications. Addison-wesley, 1977.
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