NA NAKORN, N. “THE FACTORS INFLUENCING FAN CLUB PURCHASE INTENTION ON PRODUCTS AND SERVICES OF FOOTBALL CLUBS SPONSORS IN THAI PREMIER LEAGUE”. Journal of Sports Science and Technology, vol. 13, no. 2, Dec. 2013, pp. 59-66, https://he01.tci-thaijo.org/index.php/JSST/article/view/44067.