APA-referens (7:e uppl.)
Clark, W. R. (2002). A means to an end: The biological basis of aging and death. Oxford University Press.
Chicago-referens (17:e uppl.)
Clark, William R. A Means to an End: The Biological Basis of Aging and Death. New York ; Oxford: Oxford University Press, 2002.
MLA-referens (9:e uppl.)
Clark, William R. A Means to an End: The Biological Basis of Aging and Death. Oxford University Press, 2002.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.