APA aipamena

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

Chicago Style aipamena

Morgan, David L. Successful Focus Groups: Advancing the State of the Art. Newbury Park, California: Sage Publications, 1993.

MLA aipamena

Morgan, David L. Successful Focus Groups: Advancing the State of the Art. Sage Publications, 1993.