Haryani, M. H. T., Anggesti, I., Situmeang, M., Apriliya, D., A’yuni, N., & Eliska, E. (2023). Relationship between Gadget Use and Learning Concentration Kedai Damar Village, Tebing Tinggi Subdistrict, Serdang Bedagai Regency. Indonesia Berdaya, 4(4), 1657–1660. https://doi.org/10.47679/ib.2023626