Resources:
The Best New True Crime Stories: Partners in Crime, Edited by Mitzi Szereto, Mango Publishing, 2022.
Murder Dictionary Podcast: “Occult Murders: Daniel and Manuela Ruda”  https://podcasts.apple.com/us/podcast/occult-murders-daniel-manuela-ruda/id1169967004?i=1000389846158
https://serialkillercalendar.com/A-MATCH-MADE-IN-HELL-DANIEL-AND-MANUELA-RUDA.php
https://www.theguardian.com/politics/2002/nov/16/thefarright.uk
Satanist couple jailed for killing – The Irish Times
https://www.telegraph.co.uk/news/worldnews/europe/germany/1383474/Last-kiss-as-Satanist-killers-are-locked-up.html
https://www.thesun.co.uk/news/3674781/satanist-killer-who-butchered-friend-in-coffin-to-drink-his-blood-is-back-in-court-charged-with-plotting-to-kill-his-ex-wife/
https://expressdigest.com/german-murderer-who-drank-his-victims-blood-is-freed/