APA-referens (7:e uppl.)
Porpora, D. V. (2001). Landscapes of the soul: The loss of moral meaning in American life. Oxford University Press.
Chicago-referens (17:e uppl.)
Porpora, Douglas V. Landscapes of the Soul: The Loss of Moral Meaning in American Life. Oxford ; New York: Oxford University Press, 2001.
MLA-referens (9:e uppl.)
Porpora, Douglas V. Landscapes of the Soul: The Loss of Moral Meaning in American Life. Oxford University Press, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.