Academic publishers generally do not sell case studies to libraries, so it is necessary to purchase them online directly from the publisher. Prices vary among publishers, but typically they're under $10.00 US. Note that it may be cheaper to purchase a study directly from the original publisher than from another publisher. For example, an Ivey Publication that costs C$3.40 through their site is US$8.95 on the Harvard Business Review site.
Below are links to sources of the more commonly used case studies.
Trinity Western University's Langley campus is located on the traditional, ancestral, unceded territory of the Stó:lō people. We are grateful for the opportunity to live, work, and learn on this land.