1. Sandelowski M. Qualitative analysis: what it is and how to begin. ResNurs Health. 1995;18:371–5.
2. Kvale S. Interviews: an introduction to qualitative research interviewing. Thousand Oaks: Sage Publications; 1996.
3. Saldana J. The coding manual for qualitative researchers. Los Angeles: Sage Publications; 2009.
4. Miller WL, Crabtree BF. The dance of interpretation. Doing qualitative research. Newbury Park: Sage Publications; 1999.
5. Spencer L, Ritchie J, O'Connor W. Analysis: practices, principles and processes. Qualitative research practice: a guide for social science students and researchers. Los Angeles: Sage Publications; 2003. p. 199–217.