Putri, C., Zulfarina and Darmawati (2026) “ANTIBACTERIAL ACTIVITY TEST OF THE COMBINATION OF MANGOSTEEN (Garcinia mangostana L.) PERICARP EXTRACT AND CIPLUKAN (Physalis angulata L.) LEAF EXTRACT AGAINST Propionibacterium acnes AS A POSTER DESIGN FOR BIOLOGICAL TECHNOLOGY INNOVATION MATERIALS FOR GRADE X SMA”, Algebra : Jurnal Pendidikan, Sosial dan Sains, 6(2), pp. 338–347. doi:10.58432/sybgy165.