Citazione Stile APA (7a Edizione)

Rossi, P. H., & Freeman, H. E. (1993). Evaluation: A systematic approach (Fifth edition.). SAGE Publications.

Citazione stile Chigago Style (17a edizione)

Rossi, Peter H., e Howard E. Freeman. Evaluation: A Systematic Approach. Fifth edition. California: SAGE Publications, 1993.

Citatione MLA (8a ed.)

Rossi, Peter H., e Howard E. Freeman. Evaluation: A Systematic Approach. Fifth edition. SAGE Publications, 1993.