Poon, J. J. ., M. C. . Tan, and C. H. . Geow. “Effects of Osmotic Dehydrated and Ultrasound Pre-Treated Orange Peel on Dye Removal”. International Journal of Chemical and Process Engineering Research, vol. 7, no. 1, Apr. 2020, pp. 1-11, doi:10.18488/journal.65.2020.71.1.11.