Patton M Q (1987) Chapter 6. Analyzing and interpreting qualitative data, In ‘How to use qualitative methods in evaluation’, M.Q. Patton, Sage: Newbury Park, California.
Other suggested references for further reading:
Patton M Q (1990) Part III. Analysis, interpretation, and reporting. In ‘Qualitative evaluation and research methods, 2nd edition’, M Q Patton, Sage: Newbury Park, California.
Dey, I (1993) Qualitative data analysis: A user-friendly guide for social scientists, Routledge: London.