“Analysis of Total Terpenoids from Maniltoa Grandiflora (A. Gray) Scheff Leaves Using TLC and HPLC Methods”. Stannum : Jurnal Sains Dan Terapan Kimia, vol. 2, no. 2, Oct. 2020, pp. 40-44, https://doi.org/10.33019/jstk.v2i2.1976.