QOLBI, G. N. .; GUNAWAN, B. .; SUGANDI, Y. S. . ALTERNATIF KEBIJAKAN UNTUK FLY ASH AND BOTTOM ASH (STUDI KASUS: PP NO. 22 TAHUN 2021). SCIENTIFIC JOURNAL OF REFLECTION : Economic, Accounting, Management and Business, [S. l.], v. 6, n. 3, p. 502-512, 2023. DOI: 10.37481/sjr.v6i3.691. Disponível em: https://ojspustek.org/index.php/SJR/article/view/691. Acesso em: 7 oct. 2026.