Thornton, M. (1984). Spiritual direction: A practical introduction. SPCK.
Chicago Style aipamenaThornton, Martin. Spiritual Direction: A Practical Introduction. London: SPCK, 1984.
MLA aipamenaThornton, Martin. Spiritual Direction: A Practical Introduction. SPCK, 1984.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.