APA-viite (7. p.)
Protasio, J. (2011). The day the world was shocked: The Lusitania disaster and its influence on the course of World War I. CASEMATE.
Chicago-viite (17. p.)
Protasio, John. The Day the World Was Shocked: The Lusitania Disaster and Its Influence on the Course of World War I. Philadelphia: CASEMATE, 2011.
MLA-viite (9. p.)
Protasio, John. The Day the World Was Shocked: The Lusitania Disaster and Its Influence on the Course of World War I. CASEMATE, 2011.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.