อินทร ช. (2020) “PROBLEMS AND NEEDS FOR THE DEVELOPMENT OF ENGLISH COMMUNICATION SKILLS OF BANK STAFF IN PATTAYA CITY”, Pathumthani University Academic Journal, 12(2), pp. 266–276. available at: https://so05.tci-thaijo.org/index.php/ptujournal/article/view/246770 (accessed: 29 September 2026).