Lua APA (7ú heag.)
Porpora, D. V. (2001). Landscapes of the soul: The loss of moral meaning in American life. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)
Porpora, Douglas V. Landscapes of the Soul: The Loss of Moral Meaning in American Life. Oxford ; New York: Oxford University Press, 2001.
Lua MLA (9ú heag.)
Porpora, Douglas V. Landscapes of the Soul: The Loss of Moral Meaning in American Life. Oxford University Press, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.