Citazione Stile APA (7a Edizione)

Williamson, J. (1940). The Life and Growth of the British Empire. Oxford University Press.

Citazione stile Chigago Style (17a edizione)

Williamson, J.A. The Life and Growth of the British Empire. London [u.a.]: Oxford University Press, 1940.

Citatione MLA (8a ed.)

Williamson, J.A. The Life and Growth of the British Empire. Oxford University Press, 1940.