Khairunnisa, Shafira, et al. “TEKNIK DAN ANALISIS KELAYAKAN FINANSIAL PENGOLAHAN LIMBAH GAHARU DI KOTA METRO LAMPUNG”. Jurnal Nusa Sylva, vol. 21, no. 1, June 2021, pp. 9-16, doi:10.31938/jns.v21i1.317.