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2. Sorting things out: Classification and its consequences;Bowker,1999
3. Constructing grounded theory: A practical guide through qualitative analysis;Charmaz,2006
4. Claritas. (2004a). My best segments: Pools & patios. Retrieved January 18, 2005, from http://www.cluster1.claritas.com/MyBestSegments/Content/Segments/demographics
5. Claritas. (2004b). My best segments: Young & rustic. Retrieved January 18, 2005, from http://www.cluster1.claritas.com/MyBestSegments/Content/Segments/demographics