Montgomery, J. W. (1973). Christianity for the tough minded: Essays in support of an intellectally. Bethany fellowship.
Chicago-referens (17:e uppl.)Montgomery, John Warwick. Christianity for the Tough Minded: Essays in Support of an Intellectally. Minneapolis: Bethany fellowship, 1973.
MLA-referens (9:e uppl.)Montgomery, John Warwick. Christianity for the Tough Minded: Essays in Support of an Intellectally. Bethany fellowship, 1973.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.