โพธิวรรณ์ ด. “Listening to Voices from Elderly : Fighting and Social Space Construction”. Journal of Research and Development Institute Rajabhat Maha Sarakham University, vol. 2, no. 1, Jan. 2015, pp. 53-61, https://so03.tci-thaijo.org/index.php/rdirmu/article/view/211415.