Christie, D. B. (1932). While the world revolves: Being the life and martyrdom of Blessed John Houghton, Carthusian monk and martyr. Burns, Oates & Washbourne.
Chicago-referens (17:e uppl.)Christie, Donald Benedict. While the World Revolves: Being the Life and Martyrdom of Blessed John Houghton, Carthusian Monk and Martyr. London: Burns, Oates & Washbourne, 1932.
MLA-referens (8:e uppl.)Christie, Donald Benedict. While the World Revolves: Being the Life and Martyrdom of Blessed John Houghton, Carthusian Monk and Martyr. Burns, Oates & Washbourne, 1932.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.