Blystone, D. (2020, August 28). The Story of Uber. https://www.investopedia.com/articles/personal-finance/111015/story-uber.asp.

​

Kh., N. (2018, December 26). How to Make an App Like Uber and Estimate Its Cost [Checklist]. https://www.cleveroad.com/blog/estimation-checklist-how-much-does-it-cost-to-develop-an-app-like-uber.

​

The Online Tutoring Market to Grow by $ 132.21 bn During 2020-2024 | Industry Analysis, Market Trends, Opportunities, and Forecast | Technavio. https://finance.yahoo.com/news/online-tutoring-market-grow-132-162000266.html?guccounter=1.