APA (7th ed.) Zitazioa
Olson, D. T. (2008). The American church in crisis. Zondervan Publications.
Chicago Style (17th ed.) Zitazioa
Olson, David T. The American Church in Crisis. Michigan: Zondervan Publications, 2008.
MLA (9th ed.) Zitazioa
Olson, David T. The American Church in Crisis. Zondervan Publications, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.