THE RELATIONSHIP BETWEEN SELF-CONTROL AND EGOCENTRIC ATTITUDE IN CLASS XI STUDENTS OF REIS CENDIKIA MEDAN VOCATIONAL SCHOOL ACADEMIC YEAR 2021-2022. J.Lit.Nus. 2022;2(1a):515-522. Accessed September 10, 2025. http://journal.citradharma.org/literasinusantara/article/view/326