https://www.education.com/magazine/article/Students_Teachers_Social_Networking/
http://www.npr.org/2011/12/07/143264921/friendly-advice-for-teachers-beware-of-facebook
https://www.forbes.com/sites/janetwburns/2017/06/30/germany-now-allows-up-to-57m-in-fines-if-facebook-doesnt-remove-hate-speech-fast/#78efc9d6761d
http://www.hackeducation.com/2011/08/07/why-would-a-teacher-want-to-friend-a-student-on-facebook/
https://www.in-mind.org/article/selfie-esteem-the-relationship-between-body-dissatisfaction-and-social-media-in-adolescent?gclid=CjwKCAjwr7X4BRA4EiwAUXjbt8WULRoCsxoCTJ4uhyhS-BwZKAUsgHZjl7bHjukkgHCwPBawKw0d9RoC_uwQAvD_BwE