D. S. Panjaitan, D. F. F. D. Butar Butar, and H. C. Nasution, “The Influence of Work Discipline and Training on Teacher Performance at Public Elementary School 064983 Medan”, J. Found. Learn. Child Dev, vol. 1, no. 02, pp. 90–96, May 2025, doi: 10.53905/ChildDev.v1i02.13.