Bajet, Jr., Manuel A., and Nelson Bajet. “Development of Domestic Refrigerator Trainer: An Instructional Material for Beginner Technician”. JPAIR Multidisciplinary Research 16, no. 1 (March 15, 2014): 82–99. Accessed May 2, 2025. https://www.philair.ph/index.php/jpair/article/view/272.