# Karl-Otto Apel

> German philosopher (1922–2017)

**Wikidata**: [Q58853](https://www.wikidata.org/wiki/Q58853)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Karl-Otto_Apel)  
**Source**: https://4ort.xyz/entity/karl-otto-apel


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. [Source](http://www.zeit.de/2017/21/karl-otto-apel-philosoph-nachruf)
4. BnF authorities
5. Biographical Dictionary of Twentieth-Century Philosophers (1996 ed.)
6. Czech National Authority Database
7. International Standard Name Identifier
8. Open Library
9. Virtual International Authority File
10. CiNii Research
11. www.ae-info.org
12. [Source](https://kalliope-verbund.info/DE-611-BF-86503)
13. Brockhaus Enzyklopädie
14. Internet Philosophy Ontology project
15. Proleksis Encyclopedia
16. Croatian Encyclopedia
17. Munzinger Personen
18. Freebase Data Dumps. 2013
19. CONOR.SI
20. Treccani's Enciclopedia on line
21. Enciclopedia Treccani
22. LIBRIS. 2012
23. Treccani Philosophy