Lestari Maria Esterlina Silalahi, et al. “THE EFFECT OF THE ULOS LEARNING MODEL ON CRITICAL THINKING SKILLS OF GRADE XI SMA NEGERI 2 PEMATANGSIANTAR IN THE 2025 2026 ACADEMIC YEAR”. International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET), vol. 4, no. 11, Oct. 2025, pp. 3795-02, doi:10.54443/ijset.v4i11.1245.