Ryder, J. (1994). American philosophic naturalism in the twentieth century. Prometheus Books.
Čikaški stil citiranja (17. izdanje)Ryder, John. American Philosophic Naturalism in the Twentieth Century. Amherst, N.Y: Prometheus Books, 1994.
MLA način citiranja (9. izdanje)Ryder, John. American Philosophic Naturalism in the Twentieth Century. Prometheus Books, 1994.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.