APA Edition Citation

Whitehead, A. N., & Russell, B. (1927). Principia mathematica. V.2 .- 2nd ed (2nd ed.). University Press.

Chicago Edition Citation

Whitehead, Alfred North, and Bertrand Russell. Principia Mathematica. V.2 .- 2nd Ed. 2nd ed. Cambridge: University Press, 1927.

MLA Edition Citation

Whitehead, Alfred North, and Bertrand Russell. Principia Mathematica. V.2 .- 2nd Ed. 2nd ed. University Press, 1927.