Office for Intellectual Freedom (2013-03-26). "Top 10 Most Challenged Books Lists". American Library Association. Archived from the original on 2017-07-28. Retrieved 2021-06-16.
Office for Intellectual Freedom (2013-03-26). "Top 10 Most Challenged Books Lists". American Library Association. Archived from the original on 2017-07-28. Retrieved 2021-06-16.