“Uji Aktivitas Antibakteri Ekstrak Metanol Bunga Tapak Dara (Catharanthus roseus) Terhadap Bakteri Streptococcus pneumoniae dan Bakteri Klebsiella pneumoniae”. Journal of Pharmaceutical and Sciences 5, no. 2 (Desember 12, 2022): 438–450. Diakses Oktober 21, 2026. https://journal-jps.com/new/index.php/jps/article/view/2085.