Widarta, I Wayan Rai, et al. “OPTIMASI PROSES DEASIDIFIKASI DALAM PEMURNIAN MINYAK SAWIT MERAH SKALA PILOT PLANT [Optimization of Deacidification Process in Red Palm Oil Purification on Pilot Plant Scale]”. Jurnal Teknologi Dan Industri Pangan, vol. 23, no. 1, June 2012, p. 41, https://journal.ipb.ac.id/jtip/article/view/5292.