DARADKEH, Yousef; SELIMI, Dren; GOUVEIA, Luis Borges. E-BOOKS vs. P-BOOKS: WHO’S PROFITING?. European Scientific Journal, ESJ, [S. l.], v. 8, n. 6, 2012. DOI: 10.19044/esj.2012.v8n6p%p. Disponível em: https://test.eujournal.org/index.php/esj/article/view/109. Acesso em: 20 apr. 2025.