Ualiyeva, Nazym Toleubekovna, et al. “Competence-Oriented Independent Work of Students in Higher Education Institutions: Characteristics, Content and Organization”. International Review of Management and Marketing, vol. 6, no. 3S, Mar. 2016, pp. 146-55, https://mail.econjournals.com/index.php/irmm/article/view/2205.