1. Social Media Fact Sheet
https://www.pewresearch.org/internet/fact-sheet/social-media/
2. Teens Who Use Cellphones Do It to Pass Time, Connect with Others, Learn New Things
https://www.pewresearch.org/fact-tank/2019/08/23/most-u-s-teens-who-use-cellphones-do-it-to-pass-time-connect-with-others-learn-new-things/
3. EU Kids Online 2020: Survey Results from 19 Countries
https://www.lse.ac.uk/media-and-communications/assets/documents/research/eu-kids-online/reports/EU-Kids-Online-2020-10Feb2020.pdf
4. Childhood Access to Technology and Cyberbullying
5. Cyberbullying: Aggressive communication in the digital age;Roberto,2010