Cita APA (7a ed.)

Stecher, B. M., & Davis, W. A. (1987). How to focus an evaluation (2nd ed.). Sage.

Cita Chicago Style (17a ed.)

Stecher, Brian M., y W. Alan Davis. How to Focus an Evaluation. 2nd ed. Newbury Park [etc.]: Sage, 1987.

Cita MLA (9a ed.)

Stecher, Brian M., y W. Alan Davis. How to Focus an Evaluation. 2nd ed. Sage, 1987.