Muhamad, Aida, Ahmad Tarmizi Abd. Karim, Nur Fathanah Zakaria, and Krystabel Jonya Ak Rapok. 2016. “DETERMINATION OF PHTHALATE ESTER COMPOUNDS IN SEMBRONG RIVER SEDIMENT”. Journal of Techno-Social 8 (2). https://journal.uthm.edu.my/index.php/JTS/article/view/1517.