Hakim S, Abd. “Synthesis and Characterization of PVA-Enzyme GA PPy PVC-KTpClPB-O-NPOE Indicator Electrodes, XRD Analysis, FTIR and Variable Signal Analysis”. Jurnal Penelitian Pendidikan IPA 9, no. 3 (March 31, 2023): 1149–1154. Accessed November 22, 2024. https://jppipa.unram.ac.id/index.php/jppipa/article/view/2389.