Cita APA (7th ed.)

Policy Studies Organization, Chen, H., & Rossi, P. H. (1992). Using theory to improve program and policy evaluations. Greenwood Press.

Cita Chicago (17th ed.)

Policy Studies Organization, Huey-tayh Chen, i Peter H. Rossi. Using Theory to Improve Program and Policy Evaluations. New York: Greenwood Press, 1992.

Cita MLA (9th ed.)

Policy Studies Organization, et al. Using Theory to Improve Program and Policy Evaluations. Greenwood Press, 1992.