(1)
Tambunan, D.; Ringo, A. I. S.; Sinaga, T. N. S.; Sinaga, D. J.; Panjaitan, A. D. P.; Anistasya, N. Analysis of Learning Environment Conditions on Students’ Concentration and Learning Outcomes in Learning Activities. OJE 2026, 6 (1), 14-19. https://doi.org/10.61730/qqg4mv74.