“Determination of Major Cation and Anion Content in Coconut Fiber Ash Potentially Renewable Catalyst: Penentuan Kandungan Kation Dan Anion Mayor Dalam Abu Serabut Kelapa Berpotensi Katalis Renewable”.
JISTECH: Journal of Information Science and Technology, vol. 6, no. 2, Jan. 2023,
https://jistechunipa.com/index.php/istech/article/view/141.