Cita APA

Whitehead, A. N., & Russell, B. (1935). Principia mathematica. London: Cambridge University press.

Chicago Style Citation

Whitehead, Alfred North., i Bertrand Russell. Principia Mathematica. London: Cambridge University press, 1935.

Cita MLA

Whitehead, Alfred North., i Bertrand Russell. Principia Mathematica. London: Cambridge University press, 1935.

Atenció: Aquestes cites poden no estar 100% correctes.