Cita APA (7a ed.)

Jenson, R. L., & Bartley, J. W. (1991). Parametric estimation of programming effort: An object-oriented model. [s.n.].

Cita Chicago Style (17a ed.)

Jenson, Richard L., y Jon W. Bartley. Parametric Estimation of Programming Effort: An Object-oriented Model. [S.l.]: [s.n.], 1991.

Cita MLA (9a ed.)

Jenson, Richard L., y Jon W. Bartley. Parametric Estimation of Programming Effort: An Object-oriented Model. [s.n.], 1991.