Montgomery, J. W. (1973). Christianity for the tough minded: Essays in support of an intellectally. Bethany fellowship.
Lua i Stíl Chicago (17ú heag.)Montgomery, John Warwick. Christianity for the Tough Minded: Essays in Support of an Intellectally. Minneapolis: Bethany fellowship, 1973.
Lua MLA (9ú heag.)Montgomery, John Warwick. Christianity for the Tough Minded: Essays in Support of an Intellectally. Bethany fellowship, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.