Cita APA

Whitehead, A. N., & Russell, B. (1927). Principia mathematica. London: Cambridge University press.

Chicago Style Citation

Whitehead, Alfred North., i Bertrand Russell. Principia Mathematica. London: Cambridge University press, 1927.

Cita MLA

Whitehead, Alfred North., i Bertrand Russell. Principia Mathematica. London: Cambridge University press, 1927.

Atenció: Aquestes cites poden no estar 100% correctes.