Cita APA (7a ed.)

Clarke, A., & Dawson, R. (1999). Evaluation research: An introduction to principles, methods, and practice. SAGE.

Cita Chicago Style (17a ed.)

Clarke, Alan, y Ruth Dawson. Evaluation Research: An Introduction to Principles, Methods, and Practice. London ; Thousand Oaks, Calif.: SAGE, 1999.

Cita MLA (9a ed.)

Clarke, Alan, y Ruth Dawson. Evaluation Research: An Introduction to Principles, Methods, and Practice. SAGE, 1999.