Specific and Non-Specific Parameters Standardization of Ethanolic 96% Extract of Kersen Leaves (Muntingia calabura L.), Putri, Aristha Novyra, Saputri Revita, Astuti Karunita Ika, Sari Ika Puspita, and Sulaiman Teuku Nanda Saif , Pharmacognosy Journal, December 2021, Volume 13, Issue 6s, p.1710-1714, (2021)