Nurwahyuningsih, Nurwahyuningsih, et al. “Analysis of Shelf Type Flash Dryer Machine in the Process of Drying Purple Leaves (Graptophylum Pictum Griff)”. 2023. Jurnal BETA (Biosistem Dan Teknik Pertanian), vol. 11, no. 2, Feb. 2026, pp. 468-72, doi:10.24843/JBETA.2023.v11.i02.p25.