APA (7th ed.) Zitazioa
Trueblood, D. E. (1957). Philosophy of religion. Harper & Row Publishers.
Chicago Style (17th ed.) Zitazioa
Trueblood, David Elton. Philosophy of Religion. New York: Harper & Row Publishers, 1957.
MLA (9th ed.) Zitazioa
Trueblood, David Elton. Philosophy of Religion. Harper & Row Publishers, 1957.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.