Trismawati, I. N. G. Wardana, N. Hamidi, and M. N. Sasongko. “Natural Surfactant from Fatty Acid of Morinda Citrifolia L. For Deinking Flotation”. ASEAN Journal of Chemical Engineering, Vol. 2016, no. 2, Dec. 2016, pp. 1-7, https://dev.journal.ugm.ac.id/v3/AJChE/article/view/8909.