ERTEL, Suitbert. Appraisal of Shawn Carlson’s Renowned Astrology Tests. Journal of Scientific Exploration, [S. l.], v. 23, n. 2, 2010. Disponível em: https://www.journalofscientificexploration.org/index.php/jse/article/view/99. Acesso em: 14 may. 2026.