Anjos caídos e o paraíso perdido

https://radioboanova.com.br/estudo_espirita/anjos-caidos-e-o-paraiso-perdido/

https://www.youtube.com/watch?v=tw4ojOW7BK0

https://www.youtube.com/watch?v=-0ijdTMP-ZA

https://www.youtube.com/watch?v=oAoCqbuZJ9g

http://ipeak.net/site/estudo_janela_conteudo.php?origem=5256&idioma=1

https://www.crbbm.org/media/GUILLET%20-%20FINAL%20CORRIGIDO.pdf

https://livrodosespiritos.wordpress.com/mundo-dos-espiritos/cap-1-dos-espiritos/vii-progressao-dos-espiritos/