E. Elinggrawati, T. Rahmat, W. Aprison, and H. Fitri, “Pengaruh Lingkungan Teman Sebaya Terhadap Motivasi Belajar Matematika SiswaDevelopment Research, Teacher Competency, Research, Modified Model”, jiwp, vol. 9, no. 2, pp. 153-161, Jan. 2023.