Expired LinksUpdated 3 months ago

If you chose to purchase a 180-day access ebook, both the link from the My Digital Materials section of your store account and the digital materials will expire 180 days after purchase. If you would like to access your book for more than 180-days, you can upgrade to perpetual access before the ebook expires, or you can purchase a discounted printed book. Simply click the link that says Upgrade to Perpetual next to the ebook in the My Digital Materials section of your account. 

Note that due to licensing restrictions, certain titles may not have the option to upgrade to perpetual access.