Whelan, J. P. (1971). The spirituality of Friedrich von Hügel. Newman Press.
Chicago Style aipamenaWhelan, Joseph P. The Spirituality of Friedrich Von Hügel. New York: Newman Press, 1971.
MLA aipamenaWhelan, Joseph P. The Spirituality of Friedrich Von Hügel. Newman Press, 1971.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.