Não informado. Studies in formative spirituality. Duquesne University, Institute of Formative Spirituality.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Studies in Formative Spirituality. Pittsburgh, Pa: Duquesne University, Institute of Formative Spirituality.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Studies in Formative Spirituality. Duquesne University, Institute of Formative Spirituality.
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