Case Studies are widely used in Accountancy and Finance education. They offer students the opportunity to develop their analytic and writing skills. They are most common used to examine the communication skills and team working ability of the student.
Books containing case studies can be found by using our catalogue. Here are a some examples for Accounting and Finance :
Introduction to the Accounting Process by 
Financial Accounting by 
Case Study Research by
Providing a complete portal to the world of case study research, the Fifth Edition of Robert K. Yin′s bestselling text offers comprehensive coverage of the design and use of the case study method as a valid research tool. The book offers a clear definition of the case study method as well as discussion of design and analysis techniques. The Fifth Edition has been updated with nine new case studies, three new appendices, seven tutorials presented at the end of relevant chapters, increased coverage of values and ethics, expanded discussion on logic models, a brief glossary, and completely updated citations. This book includes exemplary case studies drawn from a wide variety of academic fields.
Emerald publishing has a useful how to guide for case studies access it here
Cengage has a good introduction to the topic covering definition, Analysis, and writing a Case Study.
Five Misunderstandings about case study research by Bent Flyvbjerg
The Real Life Guide to Accounting Research Edited by Chrotopher Humphrey