Cita APA (7th ed.)

Rossi, P. H., Lipsey, M. W., & Henry, G. T. (2019). Evaluation: A systematic approach (8th ed.). Sage.

Cita Chicago (17th ed.)

Rossi, Peter H., Mark W. Lipsey, i Gary T. Henry. Evaluation: A Systematic Approach. 8th ed. New Delhi: Sage, 2019.

Cita MLA (9th ed.)

Rossi, Peter H., et al. Evaluation: A Systematic Approach. 8th ed. Sage, 2019.