Ifrada, R. A. R., E. Martati, and T. Estiasih. “EXTRACTION OPTIMIZATION PROPOLIS IN THE FUNCTIONAL DRINK OF KEPROK BATU 55 ORANGE ( Citrus Reticulate Blanco)”. Jurnal Pangan Dan Agroindustri, vol. 10, no. 4, Jan. 2023, doi:10.21776/ub.jpa.2022.010.04.5.