Citazione Stile APA (7a Edizione)

Brockie, G., & Walsh, R. (1986). The twentieth century in focus: Ireland, Europe and the world from 1890. Gill and Macmillan.

Citazione stile Chigago Style (17a edizione)

Brockie, Gerard, e Raymond Walsh. The Twentieth Century in Focus: Ireland, Europe and the World from 1890. Dublin: Gill and Macmillan, 1986.

Citatione MLA (9a ed.)

Brockie, Gerard, e Raymond Walsh. The Twentieth Century in Focus: Ireland, Europe and the World from 1890. Gill and Macmillan, 1986.