APA (7th ed.) Citation

Whitehead, A. N., & Russell, B. (1912). Principia mathematica / by Alfred North Whitehead and Bertrand Russell. Cambridge University Press.

Chicago Style (17th ed.) Citation

Whitehead, Alfred North, and Bertrand Russell. Principia Mathematica / by Alfred North Whitehead and Bertrand Russell. Cambridge: Cambridge University Press, 1912.

MLA (9th ed.) Citation

Whitehead, Alfred North, and Bertrand Russell. Principia Mathematica / by Alfred North Whitehead and Bertrand Russell. Cambridge University Press, 1912.

Warning: These citations may not always be 100% accurate.