Παραπομπή APA

Stephen A Kapp & Gary R Anderson. (2010). Agency based program evaluation. Sage.

Παραπομπή Chicago Style

Stephen A Kapp και Gary R Anderson. Agency Based Program Evaluation. California: Sage, 2010.

Παραπομπή MLA

Stephen A Kapp και Gary R Anderson. Agency Based Program Evaluation. Sage, 2010.