Du Boulay, S. (1998). Beyond the darkness: A biography of Bede Griffiths (1st ed. in the United States of America.). Doubleday.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDu Boulay, Shirley. Beyond the Darkness: A Biography of Bede Griffiths. 1st ed. in the United States of America. New York: Doubleday, 1998.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDu Boulay, Shirley. Beyond the Darkness: A Biography of Bede Griffiths. 1st ed. in the United States of America. Doubleday, 1998.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.