Sommer, A. U. (2020). Franz Overbeck: On the theory and practice of an antifundamentalist and antichristian humanism. Universidad Pedagógica y Tecnológica de Colombia.
Čikaški stil citiranja (17. izdanje)Sommer, Andreas Urs. Franz Overbeck: On the Theory and Practice of an Antifundamentalist and Antichristian Humanism. Universidad Pedagógica y Tecnológica de Colombia, 2020.
MLA način citiranja (9. izdanje)Sommer, Andreas Urs. Franz Overbeck: On the Theory and Practice of an Antifundamentalist and Antichristian Humanism. Universidad Pedagógica y Tecnológica de Colombia, 2020.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.
