Tortzen, Christian Gorm. “Claus Friisberg: Tankens Pioner. Sokrates I Platons Forsvarstale: Anmeldt Af Chr. Gorm Tortzen”. AIGIS 17, no. 2 (september 2, 2024). Set september 10, 2024. https://tidsskrift.dk/aigis/article/view/145928.