Citazione Stile APA (7a Edizione)

Tuchmann, B. W. (1966). The proud tower: A portrait of the world before the war 1890-1914. Macmillan Company.

Citazione stile Chigago Style (17a edizione)

Tuchmann, Bárbara W. The Proud Tower: A Portrait of the World Before the War 1890-1914. Nueva York: Macmillan Company, 1966.

Citatione MLA (9a ed.)

Tuchmann, Bárbara W. The Proud Tower: A Portrait of the World Before the War 1890-1914. Macmillan Company, 1966.