APA (7th ed.) Zitazioa
Roberts, M. (1993). The thought of God. Banner of Truth Trust.
Chicago Style (17th ed.) Zitazioa
Roberts, Maurice. The Thought of God. Pennsylvania: Banner of Truth Trust, 1993.
MLA (9th ed.) Zitazioa
Roberts, Maurice. The Thought of God. Banner of Truth Trust, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.