Analisis Efisiensi Penggunaan Energi Listrik Di Gedung Madrasah Ibtidaiyah Muhammadiyah I Pekanbaru. SainETIn : Jurnal Sains, Energi, Teknologi, dan Industri, [S. l.], v. 3, n. 2, p. 50–58, 2019. DOI: 10.31849/sainetin.v3i2.3044. Disponível em: https://journal.unilak.ac.id/index.php/SainETIn/article/view/3044. Acesso em: 17 jan. 2026.