APA (7th ed.) Citation

Parzer, R. (2017). The murder of psychiatric patients by Nazi perpetrators in occupied Poland. Occupation – Annihilation – Forced Labour.

Chicago Style (17th ed.) Citation

Parzer, Robert. "The Murder of Psychiatric Patients by Nazi Perpetrators in Occupied Poland." Occupation – Annihilation – Forced Labour 2017.

MLA (8th ed.) Citation

Parzer, Robert. "The Murder of Psychiatric Patients by Nazi Perpetrators in Occupied Poland." Occupation – Annihilation – Forced Labour, 2017.

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