APA (7th ed.) Zitazioa
Keller, P. (1970). A shepherd looks at Psalms 23. Zondervan Publishing House.
Chicago Style (17th ed.) Zitazioa
Keller, Phillip. A Shepherd Looks at Psalms 23. Michigan: Zondervan Publishing House, 1970.
MLA (9th ed.) Zitazioa
Keller, Phillip. A Shepherd Looks at Psalms 23. Zondervan Publishing House, 1970.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.