APA (7th ed.) Citation

Frey, H. (2018). Documenting the Charlie Hebdo Tragedy.

Chicago Style (17th ed.) Citation

Frey, Hugo. Documenting the Charlie Hebdo Tragedy. 2018.

MLA (9th ed.) Citation

Frey, Hugo. Documenting the Charlie Hebdo Tragedy. 2018.

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