APA (7th ed.) Citation

English Heritage, Culture 2000 (Program), Forbes, N., Page, R., & Pérez, G. (2009). Europe's deadly century: Perspectives on 20th-century conflict heritage. English Heritage.

Chicago Style (17th ed.) Citation

English Heritage, Culture 2000 (Program), Neil Forbes, Robin Page, and Guillermo Pérez. Europe's Deadly Century: Perspectives on 20th-century Conflict Heritage. Swindon: English Heritage, 2009.

MLA (9th ed.) Citation

English Heritage, et al. Europe's Deadly Century: Perspectives on 20th-century Conflict Heritage. English Heritage, 2009.