APA-referens (7:e uppl.)
Cummings, C. (1980). Spirituality and the desert experience. Institute of Formative Spirituality, Duquesne University.
Chicago-referens (17:e uppl.)
Cummings, Charles. Spirituality and the Desert Experience. Pittsburgh, PA: Institute of Formative Spirituality, Duquesne University, 1980.
MLA-referens (9:e uppl.)
Cummings, Charles. Spirituality and the Desert Experience. Institute of Formative Spirituality, Duquesne University, 1980.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.