Cassell, C. and Symon, G. (2004) Essential guide to qualitative methods in organizational research. London: SAGE.
Denzin, N.K. and Lincoln, Y.S. (2011) The SAGE handbook of qualitative research. 4th ed. Thousand Oaks, California: SAGE.
Silverman, D. (2013) A very short, fairly interesting and reasonably cheap book about qualitative research. 2nd ed. London: Sage.
Silverman, David (2010) Doing qualitative research: a practical handbook. 3rd ed. London: SAGE.
Symon, G. and Cassell, C. (2012) Qualitative organizational research: core methods and current challenges. London: Sage.
Thorpe, R., Holt, R., and MyiLibrary (2008) The Sage dictionary of qualitative management research [electronic resource]. London: SAGE. Available at: https://ebookcentral.proquest.com/lib/nottingham/detail.action?docID=433627.