Textbook authors David Knox and Caroline Schacht have settled their lawsuit with Cengage over its Cengage Unlimited subscription service for an undisclosed sum. Under the terms of the agreement, the rights to the authors’ textbook, Choices in Relationships, will revert back to them, and Cengage will receive all rights to the authors’ remaining textbooks, Marriage and the Family, and Understanding Social Problems.

Cengage authors David Knox and Caroline Schacht filed a class action lawsuit against Cengage on May 14, claiming the company’s emphasis on digital distribution, including its new Cengage Unlimited model and expanded digital courseware offerings, violated their publishing agreements, and that the company was refusing to provide information that would allow them to audit their royalty payments.