APA (7th ed.) Citation

Williams, P. (2004). Witnessing genocide: Vigilance and remembrance at Tuol Sleng and Choeung Ek. Holocaust and genocide studies.

Chicago Style (17th ed.) Citation

Williams, Paul. "Witnessing Genocide: Vigilance and Remembrance at Tuol Sleng and Choeung Ek." Holocaust and Genocide Studies 2004.

MLA (8th ed.) Citation

Williams, Paul. "Witnessing Genocide: Vigilance and Remembrance at Tuol Sleng and Choeung Ek." Holocaust and Genocide Studies, 2004.

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