Cita APA (7th ed.)

Rossi, P. H., & Freeman , H. . E. (1985). Evaluation: A systematic approach (3rd ed.). Sage.

Cita Chicago (17th ed.)

Rossi, Peter H., i Howard E. Freeman. Evaluation: A Systematic Approach. 3rd ed. London; New Delhi: Sage, 1985.

Cita MLA (9th ed.)

Rossi, Peter H., i Howard E. Freeman. Evaluation: A Systematic Approach. 3rd ed. Sage, 1985.