Sommer, A. U. (2020). Franz Overbeck: On the theory and practice of an antifundamentalist and antichristian humanism. Universidad Pedagógica y Tecnológica de Colombia.
Chicago Style (17. basım) AtıfSommer, Andreas Urs. Franz Overbeck: On the Theory and Practice of an Antifundamentalist and Antichristian Humanism. Universidad Pedagógica y Tecnológica de Colombia, 2020.
MLA (9th ed.) AtıfSommer, Andreas Urs. Franz Overbeck: On the Theory and Practice of an Antifundamentalist and Antichristian Humanism. Universidad Pedagógica y Tecnológica de Colombia, 2020.
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