Langford, J. D., & McDonagh, D. (2003). Focus groups: Supporting effective product development. Taylor & Francis.
Chicago Style (17th ed.) CitationLangford, Joseph D., and Deana McDonagh. Focus Groups: Supporting Effective Product Development. London: Taylor & Francis, 2003.
MLA (8th ed.) CitationLangford, Joseph D., and Deana McDonagh. Focus Groups: Supporting Effective Product Development. Taylor & Francis, 2003.
Warning: These citations may not always be 100% accurate.