Langford, P. (1986). Modern philosophies of human nature: Their emergence from Christian thought. M. Nijhoff.
Chicago-referens (17:e uppl.)Langford, Peter. Modern Philosophies of Human Nature: Their Emergence from Christian Thought. Dordrecht: M. Nijhoff, 1986.
MLA-referens (9:e uppl.)Langford, Peter. Modern Philosophies of Human Nature: Their Emergence from Christian Thought. M. Nijhoff, 1986.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.