Cita APA (7a ed.)

Joll, J., & Martel, G. (2006). The origins of the First World War (3rd ed.). Pearson Longman.

Cita Chicago Style (17a ed.)

Joll, James, y Gordon Martel. The Origins of the First World War. 3rd ed. Harlow, England ; New York: Pearson Longman, 2006.

Cita MLA (9a ed.)

Joll, James, y Gordon Martel. The Origins of the First World War. 3rd ed. Pearson Longman, 2006.