Najafpour, G., P. N. Naidu, and A. H. Kamaruddin. “Rotating Biological Contactor for Biological Treatment of Poultry Processing Plant Wastewater Using Saccharomyces Cerevisiae”. ASEAN Journal of Chemical Engineering, Vol. 2, no. 1, Dec. 2002, pp. 1-6, https://jurnal.ugm.ac.id/v3/AJChE/article/view/7426.