M. K. Al Bashir Tamar, “The Influence of Understanding of Regulations and the Implementation of Electronic Taxation System on the Compliance of Personal Free Taxpayers Work in Lampung”, Int J Innov Educ Res, vol. 7, no. 12, pp. 356–360, Dec. 2019, doi: 10.31686/ijier.vol7.iss12.2076.