Citazione Stile APA (7a Edizione)

Strong, C. F. (1965). The twentieth century and the contemporary world (4. ed., 3. impression.). Univ. of London Press.

Citazione stile Chigago Style (17a edizione)

Strong, C. F. The Twentieth Century and the Contemporary World. 4. ed., 3. impression. London: Univ. of London Press, 1965.

Citatione MLA (9a ed.)

Strong, C. F. The Twentieth Century and the Contemporary World. 4. ed., 3. impression. Univ. of London Press, 1965.