RAMADHAN, Ahmad Rizky. Analisis Efisiensi Energi pada Sistem Penerangan Gedung Bertingkat. Journal of Engineering and Technological Science, [S. l.], v. 1, n. 2, p. 40–46, 2025. DOI: 10.70716/jets.v1i2.130. Disponível em: https://ejournal.kalibra.or.id/index.php/jets/article/view/130. Acesso em: 19 jan. 2026.