numerous of my classes had a syllabus that consisted of "buy eBook from XYZ otherwise you receive no credit for this course". At least one course required a boo

numerous of my classes had a syllabus that consisted of "buy eBook from XYZ otherwise you receive no credit for this course". At least one course required a book no longer in print or digital copy. the specific exam I am referring to indicated hand written as a requirement. It's also unlikely that the prof. failing me would have survived the scrutiny of the administration.