Cita APA (7a ed.)

Sandefur, G. D., Rossi, P. H., & Freeman, H. E. (1989). Workbook for evaluation: : a systematic approach (4th ed.). Sage.

Cita Chicago Style (17a ed.)

Sandefur, Gary D., Peter H. Rossi, y Howard E. Freeman. Workbook for Evaluation: : A Systematic Approach. 4th ed. Newbury Park [etc.]: Sage, 1989.

Cita MLA (9a ed.)

Sandefur, Gary D., et al. Workbook for Evaluation: : A Systematic Approach. 4th ed. Sage, 1989.