APA (7th ed.) Citation

Piper, F. (1997). Birkenau - Symbol of Nazi Genocide. Pro memoria.

Chicago Style (17th ed.) Citation

Piper, Franciszek. "Birkenau - Symbol of Nazi Genocide." Pro Memoria 1997.

MLA (8th ed.) Citation

Piper, Franciszek. "Birkenau - Symbol of Nazi Genocide." Pro Memoria, 1997.

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