GARCÍ­A-MARCO, Francisco-Javier. Apple launches a crack in the book world. Anuario ThinkEPI, [S. l.], v. 6, p. 316–319, 2012. Disponível em: https://thinkepi.scimagoepi.com/index.php/ThinkEPI/article/view/30446. Acesso em: 7 may. 2026.