APA (7th ed.) Citation

Spinoza, B. d., Shirley, S., & Feldman, S. (1982). The ethics and selected letters. Hackett Pub. Co..

Chicago Style (17th ed.) Citation

Spinoza, Benedictus de, Samuel Shirley, and Seymour Feldman. The Ethics and Selected Letters. Indianapolis: Hackett Pub. Co., 1982.

MLA (9th ed.) Citation

Spinoza, Benedictus de, et al. The Ethics and Selected Letters. Hackett Pub. Co., 1982.