APA (7e ed.) Bronvermelding

Casey, M. (1994). The undivided heart: The western monastic approach to contemplation. St. Bede's Publications.

Chicago (17e ed.) Bronvermelding

Casey, Michael. The Undivided Heart: The Western Monastic Approach to Contemplation. Petersham, Mass.: St. Bede's Publications, 1994.

MLA (8e ed.) Bronvermelding

Casey, Michael. The Undivided Heart: The Western Monastic Approach to Contemplation. St. Bede's Publications, 1994.