Renaldi, Udi, Mudofar Baehaqi, and Deni Wachyudin. 2021. “Design of Device for Detecting Alcohol Content in Perfume Using the MQ-3 Sensor: Case Studies on Various Perfume Brands”. Mestro: Jurnal Teknik Mesin Dan Elektro 3 (01):11-16. https://doi.org/10.47685/mestro.v4i01.380.