Lua APA (7ú heag.)
Newbigin, L. (1980). Sign of the kingdom. WB. Eerdmans.
Lua i Stíl Chicago (17ú heag.)
Newbigin, Lesslie. Sign of the Kingdom. Grand Rapids: WB. Eerdmans, 1980.
Lua MLA (9ú heag.)
Newbigin, Lesslie. Sign of the Kingdom. WB. Eerdmans, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.