Gelpi, D. L. (1970). Discerning the spirit: Foundations and futures of religious life. Sheed and Ward.
Chicago-referens (17:e uppl.)Gelpi, Donald L. Discerning the Spirit: Foundations and Futures of Religious Life. New York: Sheed and Ward, 1970.
MLA-referens (8:e uppl.)Gelpi, Donald L. Discerning the Spirit: Foundations and Futures of Religious Life. Sheed and Ward, 1970.
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