Cita APA (7a ed.)

Hughes, R. T. (1996). Expert judgement as an estimating method. [s.n.].

Cita Chicago Style (17a ed.)

Hughes, Robert T. Expert Judgement as an Estimating Method. [S.l.]: [s.n.], 1996.

Cita MLA (9a ed.)

Hughes, Robert T. Expert Judgement as an Estimating Method. [s.n.], 1996.