Wiwekowati, .-., Astawa, P., Jawi, I. M., & Sabir, A. (2017). Antioxidant activity of apis mellifera sp. propolis extract from Java (Indonesia). International Research Journal of Engineering, IT & Scientific Research, 3(5), 19–24. Retrieved from https://sloap.org/journals/index.php/irjeis/article/view/571