PLEASE NOTE - Some of your courses may have several textbook options listed. There could be hardcover, loose-leaf and e-book versions of the same book available and you only need to buy one. There are also often different options for duration of access to ebooks. There could be perpetual, 365, 180 or 150 days. Review and choose only one that best suits your needs. Please contact us (campusstore@cunet.carleton.ca) or check with your instructor if you have questions about your course materials options.