APA-viite (7. p.)

.Posavac, E. J., & .Carey, R. G. (1985). Program evaluation: Methods and case studies (2nd ed.). Prentice-Hall.

Chicago-viite (17. p.)

.Posavac, Emil J., ja Raymond G. .Carey. Program Evaluation: Methods and Case Studies. 2nd ed. .Englewood Cliffs, N.J: Prentice-Hall, 1985.

MLA-viite (9. p.)

.Posavac, Emil J., ja Raymond G. .Carey. Program Evaluation: Methods and Case Studies. 2nd ed. Prentice-Hall, 1985.