YouTube Secrets: The Ultimate Guide to Growing Your Following and Making Money as a Video Influencer By Sean Cannell, Benji Travis · 2018
YouTubers : How YouTube Shook Up TV and Created a New Generation of Stars By Chris Stokel-Walker · 2019
https://socialblade.com/youtube/
https://en.wikipedia.org/wiki/Social_impact_of_YouTube
https://www.omnicoreagency.com/youtube-statistics/
https://99firms.com/blog/youtube-demographics/#gref
https://www.businessofapps.com/data/youtube-statistics/