MEECHUSUP, T. Value Creation for Audio Learning Service of Working Age Population in Bangkok. Journal of Business, Innovation and Sustainability (JBIS), [S. l.], v. 4, n. 1, p. 103–110, 2009. Disponível em: https://so02.tci-thaijo.org/index.php/BECJournal/article/view/54050. Acesso em: 10 พ.ค. 2024.