Rossi, P. H., Lipsey, M. W., & Freeman, H. E. (2004). Evaluation: A systematic approach (7th ed.). Sage.
Cita Chicago Style (17a ed.)Rossi, Peter H., Mark W. Lipsey, y Howard E. Freeman. Evaluation: A Systematic Approach. 7th ed. Thousand Oaks, CA: Sage, 2004.
Cita MLA (9a ed.)Rossi, Peter H., et al. Evaluation: A Systematic Approach. 7th ed. Sage, 2004.
Precaución: Estas citas no son 100% exactas.