1. Abdul, M. (2001), Personal Income Tax Non-Compliance in Malaysia. Unpublished doctoral dissertation, Victoria University of Technology.
2. An investigation into the determinant of effective factors on tax evasion: an empirical study of Iran tax affairs organisation;Journal of Applied Sciences,2011
3. The effects of tax rates and enforcement policies on taxpayer compliance: a study of self-employed taxpayers;Atlantic Economic Journal,2001
4. Alleurope (2015), “European trade union congress on tackling tax evasion, avoidance and tax havens”, Tax Justice Network, available at: www.taxjustice.net/2015/03/17/european-trade-unions-congress-on-tackling-tax-evasion-avoidance-and-tax-havens/ (accessed 24 April 2015).
5. Income tax evasion: a theoretical analysis;Journal of Public Economics,1972