Παραπομπή APA

Perloff, R. (1979). Evalutor Interventions: Pros and Cons. Sage.

Παραπομπή Chicago Style

Perloff, Robert. Evalutor Interventions: Pros and Cons. Beverly Hills: Sage, 1979.

Παραπομπή MLA

Perloff, Robert. Evalutor Interventions: Pros and Cons. Sage, 1979.