1.www.investindia.gov.in
2.www.cleartax.in
3.www.paisabazaar.com
4.www.hdfclife.com
5.www.economicsdiscussion.net.in
6.www.avalara.com
7.www.indiafilings.com
8.www.charteredclub.com
9.Vikas Publication Book- Goods and Services Tax Authors –Dr. Sanjeet Sharma and Shaileja Anand
10.Income Tax book of Nirupam Sahitya Bhawan