MUAMAR, Abdullah; RETNONINGSIH, Amin; ANGGRAITO, Yustinus Ulung. Content validity test on moss plant e-book media with Aiken formula. Journal of Science Education Research, [S. l.], v. 5, n. 1, p. 6–13, 2021. DOI: 10.21831/jser.v5i1.40359. Disponível em: https://journal.uny.ac.id/index.php/jser/article/view/40359. Acesso em: 9 may. 2025.