Cita APA (7a ed.)

Judt, T., & Snyder, T. (2012). Thinking the Twentieth Century (1st published.). Penguin Press.

Cita Chicago Style (17a ed.)

Judt, Tony, y Timothy Snyder. Thinking the Twentieth Century. 1st published. New York: Penguin Press, 2012.

Cita MLA (9a ed.)

Judt, Tony, y Timothy Snyder. Thinking the Twentieth Century. 1st published. Penguin Press, 2012.