Cita APA (7th ed.)

Rossi, P. H., Lipsey , M. W., & Freeman , H. E. (2004). Evaluation: A systematic approach (7th ed.). Sage.

Cita Chicago (17th ed.)

Rossi, Prter H., Mark W. Lipsey , i Howard E. Freeman. Evaluation: A Systematic Approach. 7th ed. New Delhi: Sage, 2004.

Cita MLA (9th ed.)

Rossi, Prter H., et al. Evaluation: A Systematic Approach. 7th ed. Sage, 2004.