APA (7th ed.) Zitazioa
Williams, R. N. (1973). Faith facing facts. Coverdale House Publishers.
Chicago Style (17th ed.) Zitazioa
Williams, Rheinallt Nantlais. Faith Facing Facts. London: Coverdale House Publishers, 1973.
MLA (9th ed.) Zitazioa
Williams, Rheinallt Nantlais. Faith Facing Facts. Coverdale House Publishers, 1973.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.