APA (7th ed.) Zitazioa
Lewis, H. D. (1969). Philosophy of religion. Teach Yourself Books.
Chicago Style (17th ed.) Zitazioa
Lewis, Hywel David. Philosophy of Religion. London: Teach Yourself Books, 1969.
MLA (9th ed.) Zitazioa
Lewis, Hywel David. Philosophy of Religion. Teach Yourself Books, 1969.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.