Yayienda, Nibras, and Retno Wigajatri Purnamaningsih. 2022. “Quality Assurance of Voltage Measurement in Multifunction Calibrator As Measurement Standard in National Standardization Agency of Indonesia (SNSU – BSN) ”. Jurnal Penelitian Pendidikan IPA 8 (3):1184-90. https://doi.org/10.29303/jppipa.v8i3.1467.