Kalsum, N., A. Sulaeman, B. Setiawan, and I. W. T. Wibawan. “The Study of Trigona Spp Propolis Against Pro-Inflammatory Cytokine Production in Spraque Dawley Rats Macrophages Infected With Staphylococcus Aureus”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 36, no. 8, Dec. 2017, pp. 81-89, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/8367.