Morgan, D. L. (1993). Successful focus groups: Advancing the state of the art. SAGE Pub.
Citación estilo ChicagoMorgan, David L. Successful Focus Groups: Advancing the State of the Art. Newbury Park, Calif: SAGE Pub, 1993.
Cita MLAMorgan, David L. Successful Focus Groups: Advancing the State of the Art. SAGE Pub, 1993.
Warning: These citations may not always be 100% accurate.