1. Spencer L, Ritchie J, O'Connor W . Analysis: practices, principles and processes. In Ritchie J, Lewis J (eds) Qualitative research practice. pp 199–218. London: Sage Publications, 2004.
2. Lathlean J . Qualitative analysis. In Gerrish K, Lacy A (eds) The research process in nursing. pp 417–433. Oxford: Blackwell Science, 2006.
3. Williams C, Bower E J, Newton J T . Research in primary dental care part 6: data analysis. Br Dent J 2004; 197: 67–73.
4. Pope C, Ziebland S, Mays N . Analysing qualitative data. In Pope C, Mays N (eds) Qualitative research in health care. 2nd ed. pp 75–88. London: BMJ Books, 1999.
5. Ritchie J, Spencer L, O'Connor W . Carrying out qualitative analysis. In Ritchie J, Lewis J (eds) Qualitative research practice. pp 219–262. London: Sage Publications, 2004.