Cita APA

Whitehead, A. N. 1., & Russell, B. 1. (1973). Principia mathematica to *56 (Repr.). Cambrige: At the University Press.

Citación estilo Chicago

Whitehead, Alfred North 1861-1947, and Bertrand 1872-1970 Russell. Principia Mathematica to *56. Repr. Cambrige: At the University Press, 1973.

Cita MLA

Whitehead, Alfred North 1861-1947, and Bertrand 1872-1970 Russell. Principia Mathematica to *56. Repr. Cambrige: At the University Press, 1973.