สียงค์พะเนา ธนาวรรธน์, and - -. “A Study on the Satisfaction of Online Purchasing of Construction Material (Case Study of Bangkok Metropolitan Region)”. The 27th National Convention on Civil Engineering, vol. 27, Sept. 2022, pp. CEM18-1, https://conference.thaince.org/index.php/ncce27/article/view/1819.