Gaya APA

Butler, C, (. (-1967). Western mysticism, the teaching of Augustine, Gregory and Bernard on contemplation and the contemplative life, 3d ed . with 'Afterthoughts' and a new foreword by D.Knowles. Tjet. pertama 1922, yang kedua dengan 'Afterthought' 1926. . London: Constable.

Gaya MLA

Butler, Cuthbert,, (1858-1934). "Western mysticism, the teaching of Augustine, Gregory and Bernard on contemplation and the contemplative life, 3d ed . with 'Afterthoughts' and a new foreword by D.Knowles. Tjet. pertama 1922, yang kedua dengan 'Afterthought' 1926.". London: Constable, -1967. Buku.