ALVARADO, Carlos S.; NAHM, Michael; SOMMER, Andreas. Notes on Early Discussions of Mediumship. Journal of Scientific Exploration, [S. l.], v. 26, n. 4, 2012. Disponível em: https://www.journalofscientificexploration.org/index.php/jse/article/view/6. Acesso em: 27 apr. 2026.