Click on the left pointing "back" arrow at the top left-hand side of the VitalSource ebook view.
This will return you to the previous page, or the VitalSource homepage. Navigate to My Library (if not already there) by clicking the link on the left-hand side of the page.

Here you will see the books you have "borrowed". Click the triple dot on the book you wish to return.

Click Return.
A confirmation will pop up at the right-hand corner of the screen.
