Nizami, M. S., and M. I. Chaudhry. “Evaluation of Locally Available Fuller’s Earth for the Bleaching of Soybean Oil”. Biological Sciences - PJSIR, vol. 49, no. 5, Oct. 2006, pp. 314-8, https://v2.pjsir.org/index.php/biological-sciences/article/view/1231.