Asmara, Sandi, Sapto Kuncoro, Warji Warji, and Panga Argovani. 2023. “Producing Soursop Chips Using Vacuum Frying Fryer With Modification of Temperature and Pressure”. Open Science and Technology 3 (1):1-12. https://doi.org/10.33292/ost.v3i1.80.