you may check the following:

Qualitative Research in Information Systems: A Reader

Front Cover

Michael D Myers, David Avison

SAGE, May 10, 2002 - Social Science - 312 pages

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Qualitative Research in Business & Management

Front Cover

Michael D Myers

SAGE, 2009 - Business & Economics - 284 pages

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Qualitative Research: A Guide to Design and Implementation

Front Cover

Sharan B. Merriam

John Wiley & Sons, Apr 6, 2009 - Education - 320 pages

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https://books.google.jo/books/about/Qualitative_Research_in_Business_Managem.html?id=lpEVEfnbx9cC&redir_esc=y

Here are a few I found helpful when doing semi-qualitative research for my doctorate:

Robson, C 2002, Real-world research, 2nd edition, Oxford: Blackwell. 

Revans, RW 1991, ‘Action learning and the third world’, International Journal of Human Resource Management, 2, 1, pp. 73-91

O'Brien, R. 2001, ‘An Overview of the Methodological Approach of Action Research’, in Richardson, R (Ed.), Theory and Practice of Action Research, Pessoa, J, Brazil: Universidade Federal da Paraíba. (English version), downloaded from http://www.web.ca/~robrien/papers/arfinal.html

McNiff, J, and Whitehead, J 2010, You and your Action Research project, 3rd edition, Oxford: Routledge. 

Grix, J 2002, ‘Introducing students to the generic terminology of social research’, Political Studies Association, 223, pp 175-186. 

French, S 2009, ‘Action Research for practising managers’, Journal of Management Development, 28, 3, pp. 187-204, downloaded from www.emeraldinsight.com on 11 May 2012. 

Flyvbjerg, B 2011, ‘Case study’, in Denzin, NK & Lincoln, YS, eds., The Sage handbook of qualitative research, 4th edition, California: Sage, Chapter 17, pp. 301-316. 

Strauss, A, & Corbin, J 1998, Basics of qualitative research: techniques and procedures for developing grounded theory, 2nd edition, Thousand Oaks : Sage Publications. 

As you will see from the above I was heavily oriented towards Action Research.  

By the way Flyvbjerg has written some excellent material on case study analysis and he is active here on ResearchGate.  

you may check the following:

Qualitative Research in Information Systems: A Reader

Front Cover

Michael D Myers, David Avison

SAGE, May 10, 2002 - Social Science - 312 pages

----

Qualitative Research in Business & Management

Front Cover

Michael D Myers

SAGE, 2009 - Business & Economics - 284 pages

----

Qualitative Research: A Guide to Design and Implementation

Front Cover

Sharan B. Merriam

John Wiley & Sons, Apr 6, 2009 - Education - 320 pages

--

https://books.google.jo/books/about/Qualitative_Research_in_Business_Managem.html?id=lpEVEfnbx9cC&redir_esc=y

At logistics at Chalmers these are frequently used in qualitative research eduction:

1. Bryman, A. and Bell, E. (2015): Business Research Methods, 4th edition, Oxford, UK

2. Flick, U. (2014): An Introduction to Qualitative Research, 5th edition, Sage, London, UK

3. Yin, R. K. (2013): Case Study Research. Design and Methods, 5th edition, Sage, London, UK

Interesting that none of these are mentioned by anyone else here! Is the world so big that there are tons of books of this type, or is the reason something else?