ทรัพย์รวงทอง ว., ลิ้มกิติศุภสิน อ., and สุขสำราญ ส. “Public Policy Implementation : A Case Study of Paddy Subsidy Scheme in the Upper Central Province Group 2 (Chai Nat, Lop Buri, Sing Buri, Ang Thong)”. Rajapark Journal, vol. 11, no. 21, Feb. 2017, pp. 154-65, https://so05.tci-thaijo.org/index.php/RJPJ/article/view/171725.