C. Cordova, Albino, Joshua C. Dizon, Emmanuel Joseph S. Sia, Stephanie Anne, Gerald P. Arada, Alexander C. Abad, and Elmer Magsino. 2018. “Automated Dirt and Stain Removal Using Soapless Ultrasonic Dishwasher”. International Journal of Engineering & Technology 7 (4.16): 98-101. https://doi.org/10.14419/ijet.v7i4.16.21787.