Purwadi. “Pengembangan Alat Filtrasi Air Metode Funnel Stack Dengan Filter Karbon Aktif, Zeolite, Manganese Greensand, Dan ”. Akademi Angkatan Udara Journal of Defense Science and Technology : AAU-JDST 14, no. 2 (December 28, 2025): 12–38. Accessed September 25, 2026. https://journal.aau.ac.id/jdst/article/view/471.