Ningrum, R., Purwanti, E., & Sukarsono, S. (2017). Alkaloid compound identification of Rhodomyrtus tomentosa stem as biology instructional material for senior high school X grade. JPBI (Jurnal Pendidikan Biologi Indonesia), 2(3), 231–236. https://doi.org/10.22219/jpbi.v2i3.3863