HOLMES, Joe L.; ROCKINSON-SZAPKIW, Amanda. The Development and Validation of the Distance Doctoral Program Integration Scale. Online Learning, Boston, MA, v. 24, n. 4, 2020. DOI: 10.24059/olj.v24i4.1951. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/1951. Acesso em: 25 mar. 2026.