Leksuksri, Jarawee, Korpong Hongsri, and Theerat Ardsamang. 2023. “The Feasibility Study on Using Indigo Residues from the Natural Dye Extraction Process to Produce Handicraft Paper”. Bulletin of Applied Sciences 12 (1). Bangkok, Thailand:57-63. https://doi.org/10.60136/bas.v12.2023.392.