Cita APA (7a ed.)

Whitehead, A. N., & Russell, B. (1957). Principia mathematica. University Press.

Cita Chicago Style (17a ed.)

Whitehead, Alfred North, y Bertrand Russell. Principia Mathematica. Cambridge: University Press, 1957.

Cita MLA (9a ed.)

Whitehead, Alfred North, y Bertrand Russell. Principia Mathematica. University Press, 1957.