You may require copyright permissions for use of the content in your book. (copyrightlaws.com)
Any unauthorized use of the Content is a violation of copyright laws and trademark laws, and may also violate laws of privacy and publicity, and / or communications regulations and statutes. (treatplanet.com)
At the same time, companies need to establish sound practices to support the effective use of a content calendar. (contentmarketinginstitute.com)