APA (7th ed.) Citation

Gassert, P. (2021). 11. September 2001. Reclam.

Chicago Style (17th ed.) Citation

Gassert, Philipp. 11. September 2001. Ditzingen: Reclam, 2021.

MLA (9th ed.) Citation

Gassert, Philipp. 11. September 2001. Reclam, 2021.

Warning: These citations may not always be 100% accurate.