APA (7th ed.) Zitazioa
Keller, . P. (1974). A shepherd look at the good shepherd and his sheep. Zondervan.
Chicago Style (17th ed.) Zitazioa
Keller, Phillip. A Shepherd Look at the Good Shepherd and His Sheep. Michigan: Zondervan, 1974.
MLA (9th ed.) Zitazioa
Keller, Phillip. A Shepherd Look at the Good Shepherd and His Sheep. Zondervan, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.