Citazione Stile APA (7a Edizione)

Ryder, J. (1994). American philosophic naturalism in the twentieth century. Prometheus Books.

Citazione stile Chigago Style (17a edizione)

Ryder, John. American Philosophic Naturalism in the Twentieth Century. Amherst, N.Y: Prometheus Books, 1994.

Citatione MLA (9a ed.)

Ryder, John. American Philosophic Naturalism in the Twentieth Century. Prometheus Books, 1994.