BING, Wang. Nanjing Library’s Reference Service Yesterday, Today and Tomorrow. Advances in Social Sciences Research Journal, [S. l.], v. 5, n. 6, 2018. DOI: 10.14738/assrj.56.4520. Disponível em: https://scholarpublishing.org/journals/index.php/ASSRJ/article/view/3161. Acesso em: 28 may. 2026.