APA (7th ed.) Zitazioa
Bierle, D. A. (1992). Surprised by faith. H.I.S. Ministries.
Chicago Style (17th ed.) Zitazioa
Bierle, Donald A. Surprised by Faith. Minnesota: H.I.S. Ministries, 1992.
MLA (9th ed.) Zitazioa
Bierle, Donald A. Surprised by Faith. H.I.S. Ministries, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.