Rujira Dolphen และ Paitip Thiravetyan. (2014) Treatment of ink factory wastewater by chemical precipitation coupled with Cyperus alternifolius. King Mongkut’s University of Technology Thonburi:ม.ป.ท.Rujira Dolphen และ Paitip Thiravetyan. 2014. Treatment of ink factory wastewater by chemical precipitation coupled with Cyperus alternifolius. ม.ป.ท.:King Mongkut’s University of Technology Thonburi;Rujira Dolphen และ Paitip Thiravetyan. Treatment of ink factory wastewater by chemical precipitation coupled with Cyperus alternifolius. ม.ป.ท.:King Mongkut’s University of Technology Thonburi, 2014. Print.