APA-viite (7. p.)

Smith, L. C. (2011). The world in 2050: Four forces shaping civilization's northern future. Dutton ; Penguin.

Chicago-viite (17. p.)

Smith, Laurence C. The World in 2050: Four Forces Shaping Civilization's Northern Future. New York: Dutton ; Penguin, 2011.

MLA-viite (8. p.)

Smith, Laurence C. The World in 2050: Four Forces Shaping Civilization's Northern Future. Dutton ; Penguin, 2011.