Jain, C. L. (1986). Delphi: Forecast with experts' opinion. [s.n.].
Cita Chicago Style (17a ed.)Jain, Chaman L. Delphi: Forecast with Experts' Opinion. [S.l.]: [s.n.], 1986.
Cita MLA (9a ed.)Jain, Chaman L. Delphi: Forecast with Experts' Opinion. [s.n.], 1986.
Precaución: Estas citas no son 100% exactas.