PURBA, R. T.; PUTRI, A. P. D. PENGARUH PENGUATAN POSITIF TERHADAP SIKAP PERHATIAN MURID KELAS SATU SEKOLAH DASAR. Aletheia Christian Educators Journal, [S. l.], v. 4, n. 2, p. 53–60, 2023. DOI: 10.9744/aletheia.4.2.53-60. Disponível em: https://aletheia.petra.ac.id/index.php/aletheia/article/view/145. Acesso em: 4 jun. 2026.