L. S. N. Aini, D. D. T. Simanjuntak, I. N. Habsari, and S. A. Riswana, “Synthesis of the Results of the Trial of the Pocket Book on Early Intervention for Children with Special Needs with Hearing Impairments: A Qualitative Descriptive Study”, Grab Kids, vol. 6, no. 1, pp. 15–24, Jan. 2026.