Firmanda, Hengki, and Gian Juliano. 2020. “Edukasi Pembuatan Hand Sanitizer Berbahan Alami Kepada Masyarakat Di Nagari Persiapan Aia Manggih Utara, Kecamatan Lubuk Sikaping”. Unri Conference Series: Community Engagement 2 (November), 84-89. https://doi.org/10.31258/unricsce.2.84-89.