Citazione Stile APA (7a Edizione)

Posavac, E. J. (1992). Program evaluation: Methods and case studies (4th ed.). Prentice Hall.

Citazione stile Chigago Style (17a edizione)

Posavac, Emil J. Program Evaluation: Methods and Case Studies. 4th ed. Englewood Cliffs, New Jersey: Prentice Hall, 1992.

Citatione MLA (9a ed.)

Posavac, Emil J. Program Evaluation: Methods and Case Studies. 4th ed. Prentice Hall, 1992.