เฮงศรีสมบัติ จ. and Pimpo, P. 2024. Participatory action research in development of content marketing for processed herbal products: A case study of the Dao Inca Herbal Community Enterprise Group, Ban Kaeng Sub-district, Mueang Sa Kaeo District, Sa Kaeo Province. RMUTL Journal of Socially Engaged Scholarship. 8, 1 (Jun. 2024).