Russell, B. (1920). Introduction to mathematical philosophy (2nd ed.). Allen & Unwin.
芝加哥风格引文Russell, Bertrand. Introduction to Mathematical Philosophy. 2nd ed. London: Allen & Unwin, 1920.
MLA引文Russell, Bertrand. Introduction to Mathematical Philosophy. 2nd ed. Allen & Unwin, 1920.
警告：这些引文格式不一定是100％准确.