APA (7th ed.) Citation

Weyl, H., & Helmer, O. (1949). Philosophy of mathematics and natural science (Rev. and augmented English ed.). Princeton University Press.

Chicago Style (17th ed.) Citation

Weyl, Hermann, and Olaf Helmer. Philosophy of Mathematics and Natural Science. Rev. and augmented English ed. Princeton: Princeton University Press, 1949.

MLA (9th ed.) Citation

Weyl, Hermann, and Olaf Helmer. Philosophy of Mathematics and Natural Science. Rev. and augmented English ed. Princeton University Press, 1949.

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