ลักษณะศิริ จ. Moral Textbooks by Chaopraya Pra Sadej Surantrathibaudee (M.R. Pia malakul). JASU [internet]. 2019 Mar. 21 [cited 2026 Aug. 29];38(1):80-110. available from: https://so04.tci-thaijo.org/index.php/jasu/article/view/181222