Lua APA (7ú heag.)
Hayward, A. (1980). God is: A scientist shows why it makes sense to believe in God. T. Nelson.
Lua i Stíl Chicago (17ú heag.)
Hayward, Alan. God Is: A Scientist Shows Why It Makes Sense to Believe in God. Nashville, Tenn.: T. Nelson, 1980.
Lua MLA (9ú heag.)
Hayward, Alan. God Is: A Scientist Shows Why It Makes Sense to Believe in God. T. Nelson, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.