Abdikalykova М. ., and Ayaganova А. . “Employee Motivation As a Means of Improving Service Efficiency”. Bulletin of L.N. Gumilyov Eurasian National University. Pedagogy. Psychology. Sociology Series., vol. 144, no. 3, Sept. 2023, pp. 285-9, https://bulpedps.enu.kz/index.php/main/article/view/508.