APA (7th ed.) Citation

Spinoza, B. d., Shirley, S., & Barbone, S. (1995). The letters. Hackett.

Chicago Style (17th ed.) Citation

Spinoza, Benedictus de, Samuel Shirley, and Steven Barbone. The Letters. Indianapolis [u.a.]: Hackett, 1995.

MLA (9th ed.) Citation

Spinoza, Benedictus de, et al. The Letters. Hackett, 1995.