Ludwigson, R. (1974). A survey of Bible prophecy. Zondervan.
Lua i Stíl Chicago (17ú heag.)Ludwigson, R. A Survey of Bible Prophecy. Zondervan, 1974.
Lua MLA (9ú heag.)Ludwigson, R. A Survey of Bible Prophecy. Zondervan, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.