1. Luckerson V. These are the 10 most popular tweets of all time. Time Magazine. 2016. http://time.com/4263227/most-popular-tweets/.
2. Yadron, D. Facebook’s Sheryl Sandberg: ‘Likes’ can help stop Isis recruiters. https://www.theguardian.com/technology/2016/jan/20/facebook-davos-isis-sheryl-sandberg. 2016.
3. Advocacy 2.0: An analysis of how advocacy groups in the United States perceive and use social media as tools for facilitating civic engagement and collective action;JA Obar;Journal of Information Policy,2012
4. The nature of slacktivism: How the social observability of an initial act of token support affects subsequent prosocial action;K Kristofferson;Journal of Consumer Research,2014
5. Morozov E. From slacktivism to activism, Foreign Policy. 2019. https://foreignpolicy.com/2009/09/05/from-slacktivism-to-activism/.