Cita APA (7a ed.)

Morell, J. A. (1979). Program evaluation in social research. Pergamon general psychology series.

Cita Chicago Style (17a ed.)

Morell, Jonathan A. "Program Evaluation in Social Research." Pergamon General Psychology Series 1979.

Cita MLA (8a ed.)

Morell, Jonathan A. "Program Evaluation in Social Research." Pergamon General Psychology Series, 1979.