Citazione Stile APA (7a Edizione)

Shephard, C., Shephard, K., & Martin, D. (2002). The twentieth century world: A world study after 1900 (1. publ., reprinted.). Murray.

Citazione stile Chigago Style (17a edizione)

Shephard, Colin, Keith Shephard, e Dave Martin. The Twentieth Century World: A World Study After 1900. 1. publ., reprinted. London: Murray, 2002.

Citatione MLA (9a ed.)

Shephard, Colin, et al. The Twentieth Century World: A World Study After 1900. 1. publ., reprinted. Murray, 2002.