Cita APA (7a ed.)

Posavac, E. J., & Carey, R. G. (1980). Program evaluation: Methods and case studies. Prentice-Hall.

Cita Chicago Style (17a ed.)

Posavac, Emil. J., y Raymond G. Carey. Program Evaluation: Methods and Case Studies. Englewood Cliffs [u.a.]: Prentice-Hall, 1980.

Cita MLA (9a ed.)

Posavac, Emil. J., y Raymond G. Carey. Program Evaluation: Methods and Case Studies. Prentice-Hall, 1980.