อยู่ยืนยง ปีดิเทพ. “Comparative Standards for Marathon Running Events Between Thailand and the UK”. Journal of Humanities and Social Sciences, Rajapruk University 2, no. 3 (January 31, 2017): 12–27. Accessed May 6, 2024. https://so03.tci-thaijo.org/index.php/rpu/article/view/112422.