Kungsanan, S., Kittisrisawai, S., Kitiyanan, B., Rirksomboon, T., Osuwan, S., & Scamehorn, J. F. (2011). Recovery of Alcohol Ethoxylates Nonionic Surfactant using Co-Current Vacuum Stripping, 11(1), 22-27. Diambil dari https://journal.ugm.ac.id/v3/AJChE/article/view/8077