Djumanto, D., and N. Probosunu. “Biodiversitas Sumber Daya Ikan Di Hulu Sungai Opak [Biodiversity of Fisheries Resources in Upstream of Opak River]”. Jurnal Iktiologi Indonesia, Vol. 11, no. 1, June 2017, pp. 1-10, doi:10.32491/jii.v11i1.144.