ท้วมสุข ก. Reference and Information Services in the 21st Century : An Introduction. Journal of Information Science Research and Practice , [S. l.], v. 28, n. 3, p. 89–91, 2013. Disponível em: https://so03.tci-thaijo.org/index.php/jiskku/article/view/6228. Acesso em: 29 mar. 2024.