Cita APA (7th ed.)

Orr, L. L. (1999). Social experiments: Evaluating public programs with experimental methods. Sage.

Cita Chicago (17th ed.)

Orr, Larry L. Social Experiments: Evaluating Public Programs with Experimental Methods. Thousand Oaks, Calif: Sage, 1999.

Cita MLA (9th ed.)

Orr, Larry L. Social Experiments: Evaluating Public Programs with Experimental Methods. Sage, 1999.