If you search FiNDit you will find books which discuss case studies in many disciplines. Search FiNDit for "case studies" AND [your subject]. Example of books might include
Andrews, S. (2024). Learning and researching with case studies : a student companion for business and management research. Routledge.
Dundon, T., & Wilkinson, A. (Eds.). (2020). Case studies in work, employment and human resource management. Edward Elgar Publishing.
Gąsior, A. (Ed.). (2019). Pro-ecological restructuring of companies : case studies. Ubiquity Press. https://doi.org/10.5334/bbk
Using FiNDit search writing "business case" to find examples of preparing or how to write a business case.
Here is an example of an ebook that discusses writing business cases:
Marshall, C. (2019). Business cases that get results (1st edition). BCS.
