Rakhmawati, Rekzi Ikhwan Sumardi, and Abdul Azis Jakfar, “SELECTION OF THE BEST ALTERNATIVE IN THE PROCESSING OF PINEAPPLE JUICE AT PT. PUTRA JAYA, BLITAR REGENCY”, Int. j. innov. eng. res. technol., vol. 8, no. 09, pp. 58–65, Sep. 2021.