Q. How would I cite a book that a professor posted in my Canvas course? Do I need to acknowledge that this was in Canvas, on the web, etc?

No need to acknowledge that it was included in your Canvas course. Just make sure you have all of the information needed to do a complete reference. If you need additional details, search for the title of the book in the library catalog. Once you have found the title, click on the title and find the Description section (you may have to click on the section to expand it). This should provide you with the details necessary to cite the source.