APA (7th ed.) Zitazioa
Barclay, O. R. (1974). Reasons for faith. Intervasity.
Chicago Style (17th ed.) Zitazioa
Barclay, Oliver R. Reasons for Faith. Illinois: Intervasity, 1974.
MLA (9th ed.) Zitazioa
Barclay, Oliver R. Reasons for Faith. Intervasity, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.