Citazione Stile APA (7a Edizione)

Richards, D. (1977). An illustrated history of modern Europe 1789 - 1974 (6. ed.). Longman.

Citazione stile Chigago Style (17a edizione)

Richards, Denis. An Illustrated History of Modern Europe 1789 - 1974. 6. ed. London: Longman, 1977.

Citatione MLA (9a ed.)

Richards, Denis. An Illustrated History of Modern Europe 1789 - 1974. 6. ed. Longman, 1977.