Klomklaeng, A., Srisawad, K. and Dararat, R. (2025) “The Design of Semiotics Souvenir Products Using Soft Power Concept Promote Tourism in Chao Phraya Riverside Provinces : A Case Study of Ang Thong Province”, Journal of Faculty of Architecture and Design RMUTP, 4(1), pp. 34–49. available at: https://so08.tci-thaijo.org/index.php/JFAD/article/view/5113 (accessed: 10 December 2025).