Thodthankhun T. Problems in writing official documents of state officials in government agencies in Bangkok between 2017-2019. RMUTSB-HUMAN [internet]. 2021 Jun. 27 [cited 2026 Sep. 10];6(1):80-91. available from: https://so05.tci-thaijo.org/index.php/rmutsb-hs/article/view/243603