APA-referens (7:e uppl.)

Barry, W. A. (1990). Paying attention to God: Discernment in prayer. Ave Maria Press.

Chicago-referens (17:e uppl.)

Barry, William A. Paying Attention to God: Discernment in Prayer. Notre Dame, Ind.: Ave Maria Press, 1990.

MLA-referens (8:e uppl.)

Barry, William A. Paying Attention to God: Discernment in Prayer. Ave Maria Press, 1990.