เจริญสุข ช., and อู่อ้น ว. “THE CAUSAL FACTORS INFLUENCING THE PERCEIVED VALUE, SATISFACTION OF SERVICE QUALITY AND DESTINATION IMAGE OF HISTORICAL ATTRACTIONS (WORLD HERITAGE SITES) OF AYUTTHAYA HISTORICAL PARK - SUKHOTHAI - SISATCHANALAI AND THE KAMPHAENG PHET OF THAILAND”. Al-HIKMAH Journal, vol. 9, no. 18, Dec. 2019, pp. 147-6, https://so01.tci-thaijo.org/index.php/HIKMAH/article/view/238561.