APA (7th ed.) Citation

Cassirer, E. (2018). Substance and function and Einstein's theory of relativity. Forgotton Books.

Chicago Style (17th ed.) Citation

Cassirer, Ernst. Substance and Function and Einstein's Theory of Relativity. London: Forgotton Books, 2018.

MLA (9th ed.) Citation

Cassirer, Ernst. Substance and Function and Einstein's Theory of Relativity. Forgotton Books, 2018.

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