Roberts, F., & Marsden, G. (1975). A Christian view of history ? William B. Eerdmans.
Lua i Stíl Chicago (17ú heag.)Roberts, Frank, agus George Marsden. A Christian View of History ? Michigan: William B. Eerdmans, 1975.
Lua MLA (9ú heag.)Roberts, Frank, agus George Marsden. A Christian View of History ? William B. Eerdmans, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.