Hailekiros, Y., and L. Koskei. “Effects of Reward Policy on the Performance of Employees of Humanitarian Organization: The Case of Hope International Ethiopia, Addis Ababa”. Africa Journal of Technical and Vocational Education and Training, Vol. 4, no. 1, Nov. 2019, pp. 243-52, https://afritvet.org/index.php/Afritvet/article/view/98.