https://dispendik.situbondokab.go.id/berita/ https://vta.kemenhub.go.id/assets/
Purba, Syahriyani, Perwira, Ima, AND Pebriani, Dewa. " Profil Nutrien Nitrat dan Fosfat pada Air di Sungai Jangga, Karangasem, Bali" Current Trends in Aquatic Science [Online], Volume 4 Number 2 (27 January 2022)