DAGNALL, Neil; DRINKWATER, Kenneth Graham; PARKER, Andrew. Alien Visitation, Extra-Terrestrial Life, and Paranormal Beliefs. Journal of Scientific Exploration, [S. l.], v. 25, n. 4, 2011. Disponível em: https://journalofscientificexploration.org/index.php/jse/article/view/296. Acesso em: 24 apr. 2026.