APA (7th ed.) Citation

Stewart, D. W., & Shamdasani, P. N. (1990). Focus groups: Theory and practice. Sage Publications.

Chicago Style (17th ed.) Citation

Stewart, David W., and Prem N. Shamdasani. Focus Groups: Theory and Practice. Newbury Park, Calif.: Sage Publications, 1990.

MLA (9th ed.) Citation

Stewart, David W., and Prem N. Shamdasani. Focus Groups: Theory and Practice. Sage Publications, 1990.