TEWELL, E. C. Increased Size of E-Book Collection Positively Impacts Usage but May Reach Critical Mass. Evidence Based Library and Information Practice, [S. l.], v. 8, n. 3, p. 61–63, 2013. DOI: 10.18438/B8XW37. Disponível em: https://journals.library.ualberta.ca/eblip/index.php/EBLIP/article/view/19156. Acesso em: 23 may. 2022.