Syadullah, M. ., B. G. . Adriansyah, and T. . Wibowo. “Impact of Economic and Non-Economic Factors on Income Inequality in ASEAN Countries”. Asian Economic and Financial Review, vol. 9, no. 12, Dec. 2019, pp. 1346-57, doi:10.18488/journal.aefr.2019.912.1346.1357.