Nakban, S.N., Nuwongsri, S., Sapbua, D., Thorarit, T. and Suttapong, S. 2019. Petitioning for the Geographical Indication (GI) Symbol Usage on “Trang Roast Pork” Manufacturing Process. Journal of Multidisciplinary in Social Sciences. 15, 1 (Apr. 2019), 90–98.