Newspaper headlines in the opening credits: "Immigrant Vampires Bite Back at Racism"; "MP Blames Climate Change on Ghosts"; "Arrested Man Identifies as 'Werewolf'"; and "Possessed By a Demon? Take Our Survey".
The book the Briannas were using is called "Most Potent Spells" by A. Alison. Amanda Alison was one of this episode's writers.