Khrutkham, P. ., and S. . Gulthawatvichai. “The Factors Of Sports Stadium Facilities Affecting On Spectator Satisfaction In Thailand Premier League 2017”. Academic Journal of Thailand National Sports University, vol. 10, no. 2, May 2018, pp. 29-38, https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/248562.