Rossi, P. H., Lipsey , M. W., & Freeman , H. E. (2004). Evaluation: A systematic approach (7th ed.). Sage.
Chicago-čujuhus (17. p.)Rossi, Prter H., Mark W. Lipsey , juo Howard E. Freeman. Evaluation: A Systematic Approach. 7th ed. New Delhi: Sage, 2004.
MLA-čujuhus (9. p.)Rossi, Prter H., et al. Evaluation: A Systematic Approach. 7th ed. Sage, 2004.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.