Catholic Church. Congregatio pro Doctrina Fidei. (1989). Letter to the bishops of the Catholic Church on some aspects of Christian meditation. St. Paul Books & Media.
Chicago-referens (17:e uppl.)Catholic Church. Congregatio pro Doctrina Fidei. Letter to the Bishops of the Catholic Church on Some Aspects of Christian Meditation. Boston: St. Paul Books & Media, 1989.
MLA-referens (8:e uppl.)Catholic Church. Congregatio pro Doctrina Fidei. Letter to the Bishops of the Catholic Church on Some Aspects of Christian Meditation. St. Paul Books & Media, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.