Akhni Rarasati, S. A., Rina, O., Kalsum, N., Sofi’i, I., Widodo, Y. R., & Isnina, I. (2024). Optimization of Tetrigona apicalis Propolis Extract using Ethanol Solvent with Shaking Ultrasound Assisted Extraction Method. European Multidisciplinary Journal of Modern Science, 26(4), 110–117. https://doi.org/10.51699/emjms.v26i4.53