Otto, Bernd-Christian, “A discourse historical approach towards medieval learned magic from”, in Sophie Page and Catherine Rider (eds), The Routledge History of Medieval Magic (Abingdon: Routledge 2019), 37-47.
Otto, Bernd-Christian, "A discourse historical approach towards medieval learned magic from", in Sophie Page and Catherine Rider (eds), The Routledge History of Medieval Magic (Abingdon: Routledge 2019), 37-47.