Gaya APA
Johnston, W. (-1978).
The mysticism of the Cloud of Unknowing, foreword by Thomas Merton. .
Wheathampstead:
Antony Clarke.
Gaya MLA
Johnston, William..
"The mysticism of the Cloud of Unknowing, foreword by Thomas Merton. ".
Wheathampstead:
Antony Clarke,
-1978.
Buku.