Cita APA (7th ed.)
Spinoza, B. d. (2001). On the improvement of the understanding. Project Gutenberg.
Cita Chicago (17th ed.)
Spinoza, Benedictus de. On the Improvement of the Understanding. Champaign, IL: Project Gutenberg, 2001.
Cita MLA (9th ed.)
Spinoza, Benedictus de. On the Improvement of the Understanding. Project Gutenberg, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.