Syaifuddin, Raihani Wahdah, Abdullah, and Akhmad R. Saidy. “Sorption of Phosphate onto Surfactant-Modified Zeolite Particles”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 61, no. 1, Jan. 2022, pp. 87-99, https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/13660.