Ethanolic Extract of Propolis from Tetragonula laeviceps: Selective  Cytotoxicity for MCF-7 Breast Cancer cells, Masadah, Rina, Ekawardhani Savira, Putra Ramadani Eka, Ikram Dzul, and Faruk Muhammad , Pharmacognosy Journal, December 2023, Volume 15, Issue 6, p.1177-1180, (2023)