Gaya APA

Guillet, J, , D. (1970). Discernment of Spirits. Translated by Innocentia Richards, introduction by Edward Malatesta. : Discernement des Esprits (from the Distionnaire de Spiritualite Ascetique et Mystique,vol.III. 1957,1222-1291) . Collegeville: Collegeville Liturgical Press.

Gaya MLA

Guillet, Jacques, , Dkk.. "Discernment of Spirits. Translated by Innocentia Richards, introduction by Edward Malatesta. : Discernement des Esprits (from the Distionnaire de Spiritualite Ascetique et Mystique,vol.III. 1957,1222-1291)". Collegeville: Collegeville Liturgical Press, 1970. Buku.