อ่อนขาว จ. The development of learning media for English communication in real-life situations for the Tourist Police in Ayutthaya Historical Park. RMUTSB-HUMAN [internet]. 2019 Dec. 23 [cited 2026 Sep. 11];4(2):232-48. available from: https://so05.tci-thaijo.org/index.php/rmutsb-hs/article/view/191667