Citazione Stile APA (7a Edizione)

Owen, J. M. (1999). Program evaluation: Forms and approaches (International ed.). Sage.

Citazione stile Chigago Style (17a edizione)

Owen, John M. Program Evaluation: Forms and Approaches. International ed. London: Sage, 1999.

Citatione MLA (9a ed.)

Owen, John M. Program Evaluation: Forms and Approaches. International ed. Sage, 1999.