CLOBES, T.; JENKINS, J. J.; HAID, H.; ALLEN, R. Comparison of academic performance with a traditional textbook versus a digital openly-licensed textbook. HETS Online Journal, [S. l.], v. 13, n. 1, p. 52-74, 2022. DOI: 10.55420/2693.9193.v13.n1.63. Disponível em: https://hets.org/ojournal/index.php/hoj/article/view/63. Acesso em: 3 jul. 2024.