- HörbuchThe Open Society and Its EnemiesKarl Popper
- HörbuchAll Life is Problem SolvingKarl Popper
- HörbuchThe Myth of the FrameworkKarl Popper
- HörbuchThe Poverty of HistoricismKarl Popper
- HörbuchConjectures and RefutationsKarl Popper
- HörbuchUnended QuestKarl Popper
- HörbuchThe Logic of Scientific DiscoveryKarl Popper
- HörbuchTwo Fundamental Problems of the Theory of KnowledgeKarl Popper