Hartati, Sri, et al. “Viability and Stability of Lactobacillus Plantarum Mut 7 FNCC 250 Suplemented in Papaya-Pineapple Juice During Storage”. Jurnal Teknologi Dan Industri Pangan, vol. 14, no. 2, May 2010, p. 182, https://journal.ipb.ac.id/jtip/article/view/703.