Citazione Stile APA (7a Edizione)

Thomas, H. (1979). An unfinished history of the world. H. Hamilton.

Citazione stile Chigago Style (17a edizione)

Thomas, Hugh,1931-. An Unfinished History of the World. London: H. Hamilton, 1979.

Citatione MLA (9a ed.)

Thomas, Hugh,1931-. An Unfinished History of the World. H. Hamilton, 1979.