Q. How do I cite a Case Study using APA style?

The APA Style Guide does not have a separate style for case studies. The format would depend on whether the case study is located in a journal, book or separate publication. If it is a separate publication, cite it as a book. Check the formats at the Online Writing Lab for citations:

• in a journal https://owl.purdue.edu/owl/resource/560/07/ 
• a book or book chapter https://owl.purdue.edu/owl/resource/560/08/
• multiple authors in text citation see https://owl.purdue.edu/owl/resource/560/06/