Barnes & Noble
Barnes & Noble NOOK
家庭芭蕾形体训练
Steveloper
B&N NOOK App for NOOK Devices
My College Bookstore
Barnes & Noble College
Amazon Kindle
Amazon Mobile LLC
Google Play 图书
Google LLC
Book of the Month
Libby由OverDrive赛阅提供
OverDrive, Inc.
Audible – 亚马逊有声读物
Audible, Inc.