Purwadi (2024) “PURWARUPA ALAT FILTRASI AIR METODE GRAVITASI DENGAN FILTER SERAT IJUK, PASIR SILIKA, ZEOLIT DAN KARBON AKTIF”, Akademi Angkatan Udara Journal of Defense Science and Technology : AAU-JDST, 13(1), pp. 26–40. Available at: https://journal.aau.ac.id/jdst/article/view/358 (Accessed: 25 September 2026).