Hajrin, Wahida, Windah Anugrah Subaidah, Yohanes Juliantoni, and Dyke Gita Wirasisya. 2021. “Application of Simplex Lattice Design Method on The Optimisation of Deodorant Roll-on Formula of Ashitaba (Angelica Keiskei)”. Jurnal Biologi Tropis 21 (2):501-9. https://doi.org/10.29303/jbt.v21i2.2717.