APA (7th ed.) Citation

Russell, B. (1972). The principles of mathematics (9th ed.). George Allen & Unwin LTD.

Chicago Style (17th ed.) Citation

Russell, Bertrand. The Principles of Mathematics. 9th ed. London: George Allen & Unwin LTD, 1972.

MLA (8th ed.) Citation

Russell, Bertrand. The Principles of Mathematics. 9th ed. George Allen & Unwin LTD, 1972.

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