APA (7th ed.) Citation

Whitehead, A. N., & Russell, B. (1978). Principia mathematica: To *56 (Reprinted.). Univ. Press.

Chicago Style (17th ed.) Citation

Whitehead, Alfred North, and Bertrand Russell. Principia Mathematica: To *56. Reprinted. Cambridge: Univ. Press, 1978.

MLA (8th ed.) Citation

Whitehead, Alfred North, and Bertrand Russell. Principia Mathematica: To *56. Reprinted. Univ. Press, 1978.

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