Gleason, R. W. (1968). Contemporary spirituality: Current problems in religious life. Macmillan.
Lua i Stíl Chicago (17ú heag.)Gleason, Robert W. Contemporary Spirituality: Current Problems in Religious Life. New York: Macmillan, 1968.
Lua MLA (9ú heag.)Gleason, Robert W. Contemporary Spirituality: Current Problems in Religious Life. Macmillan, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.