Sagala, M. K. ., A. . Suyatna, Viyanti, and R. . Firdaus. “Differentiated Instruction Strategy Model to Improve Vocational students’ Outcomes Based on Learning Needs”. Indonesian Journal of Educational Development (IJED), vol. 7, no. 2, Aug. 2026, pp. 784-99, doi:10.59672/ijed.v7i2.6694.