(原始内容存档于2021年6月6日) (美国英语). Matt Barnum. To close or not to close: As schools weigh tradeoffs in light of coronavirus, here’s what research says. 2020年3月16日 [2021-03-30]
(原始内容存档于2014-08-12). IS extremists ban sport, music and art at schoolsin favour of Sharia teachings. www.news.com.au. 2014-09-02 [2014-09-20]. (原始内容存档于2014-09-24)