M. Terrefe, “A Close Scrutiny of Self-Assessment System and its Impact on the Tax Compliance Level of Taxpayers: The Case of Wolaita Zone”, ASRJETS-Journal, vol. 20, no. 1, pp. 78–103, Jun. 2016, Accessed: Sep. 22, 2025. [Online]. Available: https://www.asrjetsjournal.org/American_Scientific_Journal/article/view/1593