Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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