Praselya, Zahra, et al. “Formulasi Sediaan Gel Handsanitizer Ekstrak Metanol Rumput Laut (Euchema Spinosum) Asal Kota Bontang Kalimantan Timur: Formulation of Hand Sanitizer Gel of Methanol Extract Seaweed (Euchema Spinosum) from Bontang City, East Kalimantan”. Proceeding of Mulawarman Pharmaceuticals Conferences, vol. 15, no. 1, May 2022, pp. 205-12, doi:10.25026/mpc.v15i1.645.