Esra Butarbutar, Herlina Hotmadia Sianipar, and Irjen Pardamean Butarbutar, “The Impact of Family Environment and Students Discipline for the Result of Economics Subject Grade XI SMA Negeri 5 Pematang Siantar Year 2023/2024”, IJIST, vol. 1, no. 5, pp. 669–680, Nov. 2023.