“TAGUCHI ORTHOGONAL DESIGN FOR OPTIMIZING A UNIFIED TERNARY PROCESS TO VALORIZE OIL PALM LEAVES FOR NANOCELLULOSE ISOLATION”. Jurnal Teknologi (Sciences & Engineering), vol. 83, no. 2, Feb. 2021, pp. 95-106, https://doi.org/10.11113/jurnalteknologi.v83.15109.