จตุพร เฉลิมพล, and สุขประเสริฐ พัฒนา. “PRICE INTEGRATION ANALYSIS AMONG RUBBER MARKETS OF THAILAND”. RMUTT Global Business and Economics Review 11, no. 2 (December 30, 2016): 1–10. accessed August 30, 2026. https://so03.tci-thaijo.org/index.php/RMUTT-Gber/article/view/241956.