Cullen, Charles T. «Authentication of Digital Objects: Lessons from a Historian’s Research». Páginas a&b: arquivos e bibliotecas, no. 6 (Janeiro 8, 2014): 63–71. Acedido Janeiro 2, 2026. https://www.ojstest.xyz/ojsletrasX/index.php/paginasaeb/article/view/135.