APA引文

Weyl, H., & Helmer, O. (2009). Philosophy of mathematics and natural science. Princeton.

Chicago Edition Citation

Weyl, Hermann, and Olaf Helmer. Philosophy of Mathematics and Natural Science. New Jersey: Princeton, 2009.

MLA引文

Weyl, Hermann, and Olaf Helmer. Philosophy of Mathematics and Natural Science. Princeton, 2009.

警告：這些引文格式不一定是100％准確.