Cita APA

Rossi, P. H. 1., & Freeman, H. E. (1993). Evaluation a systematic approach (5th ed.). Newbury Park: SAGE Publications.

Citación estilo Chicago

Rossi, Peter Henry 1921-2006, y Howard E. Freeman. Evaluation a Systematic Approach. 5th ed. Newbury Park: SAGE Publications, 1993.

Cita MLA

Rossi, Peter Henry 1921-2006, y Howard E. Freeman. Evaluation a Systematic Approach. 5th ed. Newbury Park: SAGE Publications, 1993.