HILTON III, John Levi; LUTZ, Neil; WILEY, David. Examining the reuse of open textbooks. The International Review of Research in Open and Distributed Learning, [S. l.], v. 13, n. 2, p. 45–58, 2012. DOI: 10.19173/irrodl.v13i2.1137. Disponível em: https://www.irrodl.org/index.php/irrodl/article/view/1137. Acesso em: 28 mar. 2024.