Cita APA

Morgan, D. L. (1993). Successful focus groups: Advancing the state of the art. SAGE Pub.

Citación estilo Chicago

Morgan, David L. Successful Focus Groups: Advancing the State of the Art. Newbury Park, Calif: SAGE Pub, 1993.

Cita MLA

Morgan, David L. Successful Focus Groups: Advancing the State of the Art. SAGE Pub, 1993.