Are there any restrictions for using Gallup e-books?
As a publisher, Gallup takes copyright laws very seriously. Reselling, uploading to the Internet or any other means of digital distribution is prohibited. To guard against illegal distribution, Gallup e-books are protected by DRM (Digital Rights Management). Each e-book file is unique and contains both visible and invisible watermarks linking the e-book back to its purchaser, making it possible to trace illegal distribution. Any devices you download your e-book to must belong to you, and you cannot share your e-book link or files.