Na Nan, T., Tiyayon, P., Weeplian, T., Tomjai, P., Baiya, P., Thongpan, S., Feepakpro, A., Nortao, W., Kakham, T., Phanphuet, A., Chuamor , A. and Sangsuk, S. (2023) “Development of a Fresh Cacao Grading System Using Participatory Mechanisms in Nan Province”, Area Based Development Research Journal. Nakhon Si Thammarat, Thailand, 15(3), pp. 182–197. available at: https://so01.tci-thaijo.org/index.php/abcjournal/article/view/266670 (accessed: 29 August 2026).