Barnes & Noble
Barnes & Noble NOOK
B&N NOOK App for NOOK Devices
Libby由OverDrive赛阅提供
OverDrive, Inc.
My College Bookstore
Barnes & Noble College
Bookshelf
Vital Source Technologies
Google Play 图书
Google LLC
Audible – 亚马逊有声读物
Audible, Inc.
Book of the Month
Amazon Kindle
Amazon Mobile LLC