Cita APA (7a ed.)

Pawson, R., & Tilley, N. (1997). Realistic evaluation. Sage.

Cita Chicago Style (17a ed.)

Pawson, Ray, y Nick Tilley. Realistic Evaluation. London [etc.]: Sage, 1997.

Cita MLA (9a ed.)

Pawson, Ray, y Nick Tilley. Realistic Evaluation. Sage, 1997.