APA
Watkin E. I., . (1920). The Philosophy of Mysticism. London: Grant Richards.
Chicago
Watkin Edward Ingram, . 1920. The Philosophy of Mysticism. London: Grant Richards.
Harvard
Watkin E. I., . (1920). The Philosophy of Mysticism. London: Grant Richards.
MLA
Watkin Edward Ingram, . The Philosophy of Mysticism. London: Grant Richards. 1920.
