Seedapalee, P., K. Klakayan, and C. Chaiyanupattakul. “The Control of the Production of Air Ducts for Reducing Waste and Applying (A case study of 1000 DUCT RATTANABURI COMPANY LIMITED)”. Rattanakosin Journal of Science and Technology, vol. 2, no. 1, Apr. 2021, pp. 14-25, https://ph02.tci-thaijo.org/index.php/RJST/article/view/243384.