Elsy Hariani Saragih, Injen Pardamean Butar-butar, Herlina Hotmadinar Sianipar. THE INFLUENCE OF FAMILY ENVIRONMENT AND LEARNING INTEREST ON SOCIAL STUDIES LEARNING OUTCOMES OF NINTH GRADE STUDENTS AT SMP NEGERI 4 PEMATANGSIANTAR. IJSET [Internet]. 2025 Nov. 30 [cited 2026 Apr. 18];4(12):1234-40. Available from: https://ijset.org/index.php/ijset/article/view/1630