Wahyuningsih, M. S. H., S. Mubarika, I. G. Ganjar, S. Wahyuono, and T. Takeya. “5α-Oleandrin Reduce Bcl-2 Protein and Increase Bax Protein Expression on Hela Cervical Cancer Cell”. Universa Medicina, vol. 36, no. 2, Aug. 2017, pp. 102-9, doi:10.18051/UnivMed.2017.v36.102-109.