Tarigans, I.G.P Nathan, 		Negara, IGAG Surya, AND 		Andayani, Kt. Wiwin.
"PERENCANAAN DESAIN ALAT PENYARING AIR HUJAN MENGGUNAKAN BIOLOGICAL SAND FILTER  DI DESA WANAGIRI KAUH, TABANAN" <em>Proceedings</em> [Online], Volume 1 Number 1 (21 January 2020)