K. Asemave and A. S. Shiebee "Comparative Analysis of Curcuma longa Rhizome and Tectona grandis Leaves Extracts as Green Indicators versus some Synthetic Indictors in Acid-Base Titration", Journal of Engineering Research and Sciences, vol. 1, no. 1, pp. 51–55, 2022, doi: 10.55708/js0101005.