1. Allen, N. (2010). Open Textbooks: A cover to cover solution: how open textbooks are the path to affordability. In D. Wiley (Ed.) An Open Education Reader. Retrieved from https://openedreader.org/chapter/open-textbooks-a-cover-to-cover-solution-how-open-textbooks-are-the-path-to-affordability
2. Butcher, N., & Moore, A. (2015). Understanding Open Educational Resources. Retrieved from https://oerknowledgecloud.org/sites/oerknowledgecloud.org/files/2015_Butcher_Moore_Understanding-OER.pdf
3. Charles C. Sherrod Library. (2019). What if we Could Save Students $200K this year? Oh wait...we did. Retrieved from https://libraries.etsu.edu/research/oer?fbclid=IwAR34a8HENy8jQM-2TP8hnGIPlQcldy6sOVtmMujEiBX0phjD8tuzGD6mfL4
4. Motivations for textbook and learning resource publishing: Do academics want to publish OA textbooks?;Collins;LIBER Quarterly,2019
5. Measures of student success with textbook transformations: the Affordable Learning Georgia Initiative;Croteau;OPEN PRAXIS,2017