1. New Country Classifications by Income Level: 2019–2020https://blogs.worldbank.org/opendata/new-country-classifications-income-level-2019-2020
2. 2020 Total Population-Sri Lankahttps://data.worldbank.org/indicator/SP.POP.TOTL?locations=LK&view=chart
3. 2020 Urban Population-Sri Lankahttps://data.worldbank.org/indicator/SP.URB.TOTL?end=2018&locations=LK&name_desc=true&start=1960&view=chart
4. The World Bank in Sri Lankahttps://www.worldbank.org/en/country/srilanka/overview
5. The New Silk Roads: China, the U.S., and the Future of Central Asia;Zimmerman,2015