Weyl, H., & Helmer, O. (2009). Philosophy of mathematics and natural science. Princeton.
Čikaški stil citiranjaWeyl, Hermann, i Olaf Helmer. Philosophy of Mathematics and Natural Science. New Jersey: Princeton, 2009.
MLA način citiranjaWeyl, Hermann, i Olaf Helmer. Philosophy of Mathematics and Natural Science. Princeton, 2009.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.