Citazione Stile APA (7a Edizione)

Posavac, E. J., & Carey, R. G. (2007). Program evaluation: Methods and case studies (Seventh edition.). R. G. Carey and Associates.

Citazione stile Chigago Style (17a edizione)

Posavac, Emil J., e Raymond G. Carey. Program Evaluation: Methods and Case Studies. Seventh edition. Upper Saddle River, N.J: R. G. Carey and Associates, 2007.

Citatione MLA (9a ed.)

Posavac, Emil J., e Raymond G. Carey. Program Evaluation: Methods and Case Studies. Seventh edition. R. G. Carey and Associates, 2007.