Djoru, M.R.B. and Adi, R.R. 2024. Formulasi NaOH Terhadap Kualitas Sabun Padat Ekstrak Kulit Ubi Ungu (Ipomia Batatas L). MARAS : Jurnal Penelitian Multidisiplin. 2, 4 (Nov. 2024), 1824–1831. DOI:https://doi.org/10.60126/maras.v2i4.526.