Citazione Stile APA (7a Edizione)

Shephard, C., & Martin, D. (2002). The twentieth century world: A world study after 1900. Murray.

Citazione stile Chigago Style (17a edizione)

Shephard, Colin, e Dave Martin. The Twentieth Century World: A World Study After 1900. London: Murray, 2002.

Citatione MLA (9a ed.)

Shephard, Colin, e Dave Martin. The Twentieth Century World: A World Study After 1900. Murray, 2002.