Cita APA (7a ed.)

Patton, M. Q. (1980). Qualitative evaluation methods (2. print.). Sage.

Cita Chicago Style (17a ed.)

Patton, Michael Quinn. Qualitative Evaluation Methods. 2. print. Beverly Hills: Sage, 1980.

Cita MLA (8a ed.)

Patton, Michael Quinn. Qualitative Evaluation Methods. 2. print. Sage, 1980.