1. Ahmed, M. M., Chung, K. Y., & Eichenseher, J. W. (2003). Business Students’ Perception of Ethics and Moral Judgment : A Cross-Cultural Study. Journal of Business Ethics, 43, 89–102.
2. Alm, J., & Torgler, B. (2006). Culture differences and tax morale in the United States and in Europe. Journal of Economic Psychology, 27, 224–246. https://doi.org/10.1016/j.joep.2005.09.002
3. Alm, J., & Torgler, B. (2011). Do Ethics Matter? Tax Compliance and Morality. Journal of Business Ethics, 101(4), 635–651. https://doi.org/10.1007/s10551-011-0761-9
4. Armstrong, A. E. (2006). Towards a Strong Virtue Ethics for Nursing Practice. Nursing Philosophy, 7, 110–124.
5. Benk, S., Cakmak, A. F., & Budak, T. (2011). An Investigation of Tax Compliance Intention : A Theory of Planned Behavior Approach. European Journal of Economics, Finance and Administrative Sciences, (28), 180–188.
6. Bobek, D. D., & Hatfield, R. C. (2003). An Investigation of the Theory of Planned Behavior and the Role of Moral Obligation in Tax Compliance. Behavioral Research in Accounting, 15, 13–38.
7. Braithwaite, V., Reinhart, M., & Smart, M. (2006). Tax non-compliance among the under-30s (pp. 256–280).
8. Carnes, G. A., & Englebrecht, T. D. (1995). An Investigation of the Effect of Detection Risk Perceptions, Penalty Sanctions, and Income Visibility on Tax Compliance. The Journal of the American Taxation Association, 17(1), 26–41.
9. Cummings, R. G., Martinez-Vazquez, J., McKee, M., & Torgler, B. (2009). Tax morale affects tax compliance: Evidence from surveys and an artefactual field experiment. Journal of Economic Behavior and Organization, 70(3), 447–457. https://doi.org/10.1016/j.jebo.2008.02.010
10. Cummings, R. G., Martinez-Vazquez, J., & Michael, M. (2001). Cross-Cultural Comparisons of Tax Compliance Behavior.
11. Davis, J. S., Hecht, G., & Perkins, J. D. (2003). Social Behaviors, Enforcement, and Tax Compliance Dynamics. The Accounting Review, 78(1), 39–69. https://doi.org/10.2308/accr.2003.78.1.39
12. Haji-Othman, Y., Nazjmi, W., Fisol, M., & Faisal, M. (2019). Motivations for Paying Income Zakat And Relations to Maqasid Shari’Ah and Sustainable Development Goals, 2019 (June), 410–421.
13. Haji-Othman, Y., Sheh Yusuff, M. S., & Abd Latib, M. F. (2018). Motivations for Paying Income Zakat among UniSHAMS’ Employees. International Journal of Academic Research in Business and Social Sciences, 8(10), 619–628. https://doi.org/10.6007/IJARBSS/v8-i10/4768
14. Halla, M. (2010). The Link between the Intrinsic Motivation to The Link between the Intrinsic Motivation to Comply and Compliance Behavior : A Critical Appraisal of Existing Evidence, (4843).
15. Kirchler, E., Muehlbacher, S., Kastlunger, S., & Wahl, I. (2007). Why pay taxes? A review of tax compliance decisions. International Studies Program Working Paper, Georgia State University (Vol. 07–30). https://doi.org/10.4324/9780203851616
16. Mohamed Sareye Farah, J., Haji-Othman, Y., & Mohamed Omar, M. (2017). The Influence of Attitude, Religiosity, and Perception towards Law Enforcement on Intention towards Compliance Behaviour of Income Zakat among KUIN Staff in Kedah, Malaysia. International Journal of Muamalat, 1(1), 25–45.
17. Mohd Rizal, P. (2010). Tax Knowledge and Tax Compliance Determinants in Self Assessment System in Malaysia.
18. Murphy, K. (2008). Enforcing Tax Compliance : To Punish or Persuade ?, 38(1), 113–136.
19. Niemirowski, P., Baldwin, S., & Wearing, A. J. (2003). Tax-Related Behaviours, Beliefs, Attitudes and Values and Taxpayer Compliance in Australia. Journal of Australian Taxation, 6(1), 132–165.
20. Omar, K., Abdul Majid, A. H., & Johari, H. (2013). Job Satisfaction and Turnover Intention Among Nurses: The Mediating Role Of Moral Obligation. Journal of Global Management, 5(1), 44–56.
21. Zainol, B. (2008). Faktor-faktor Penentu Niat Gelagat Kepatuhan Zakat Pendapatan Gaji.