Ratumbuisang, Laura Walanda, et al. “PARENTAL SUPPORT AND PEER ENVIRONMENT ON ACADEMIC ACHIEVEMENT THROUGH LEARNING MOTIVATION MEDIATION”. Jurnal Pendidikan Ekonomi, Perkantoran, Dan Akuntansi, vol. 5, no. 1, Apr. 2024, pp. 185-96, doi:10.21009/jpepa.0501.18.