Cita APA (7th ed.)

Posavac, E. J., & Carey , R. G. (1992). Program evaluation: Methods and case studies. Prentice Hall.

Cita Chicago (17th ed.)

Posavac, Emil J., i Raymond G. Carey. Program Evaluation: Methods and Case Studies. Englewood Cliffs, N.J.: Prentice Hall, 1992.

Cita MLA (9th ed.)

Posavac, Emil J., i Raymond G. Carey. Program Evaluation: Methods and Case Studies. Prentice Hall, 1992.