R. Tampang, S. Alaydrus, N. P. Dewi, and J. Tandi, “Determination of Specific and Non-Specific Standardization Parameters for Ethanol Extract of Purple Leaves (Graptophyllum Pictum (L) Griff)”, jppipa, pendidikan ipa, fisika, biologi, kimia, vol. 10, no. 9, pp. 6594–6602, Sep. 2024.