This is written in Finnish, but a translation is underway hopefully in 2017. The book takes a sociological look into qualitative research methods in business studies. My co-authors were a business professor, and one of the best sociologists in Europe. Although written as a method text, it makes several contributions in particular in its novel interpretation of business through sociology, and in its treatment of inference in Chapters 10-11, and its treatment of ethics and confidentiality in Chapter 12. The book has withstand time really well, and through written for a small language, has received close to 1,000 citations.