APA (7th ed.) Citation

Stewart, D. W., Rook, D. W., & Shamdasani, P. N. (2007). Focus groups: Theory and practice. Sage Publications.

Chicago Style (17th ed.) Citation

Stewart, David W., Dennis W. Rook, and Prem N. Shamdasani. Focus Groups: Theory and Practice. Thousand Oaks: Sage Publications, 2007.

MLA (9th ed.) Citation

Stewart, David W., et al. Focus Groups: Theory and Practice. Sage Publications, 2007.