APA (7th ed.) Citation

Spinoza, B. d., & Elwes, R. H. M. (1997). Ethics - Part 4. Project Gutenberg.

Chicago Style (17th ed.) Citation

Spinoza, Benedictus de, and R. H. M. Elwes. Ethics - Part 4. Project Gutenberg, 1997.

MLA (9th ed.) Citation

Spinoza, Benedictus de, and R. H. M. Elwes. Ethics - Part 4. Project Gutenberg, 1997.

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