In the Second Edition of this bestselling book Evert Gummesson presents a fresh approach to case study research. Stressing the need for involved rather than detached researchers, Gummesson links quality assessment of case study research to current total quality management thinking and proposes the concept of management action science - where the researcher is both actor and student - as the most advanced and rewarding approach to research. The book is written in an easy-to-read personal style and is laden with examples from academic research, real-world practice and management consultancy.