Kamutthapichai, C., Kamutthapichai, C., Taweesup, W. and Aiemsai, P. 2026. Cultural Capital of Kamphaeng Phet World Heritage Site and the Development of Creative Souvenir. Humanities and Social Sciences Nakhonsawan Rajabhat University Academic Journal. 13, 1 (Jun. 2026), 55–69.