Religion zwischen Kirche und Mystik : Friedrich von Hügel und der Modernismus / Peter Neuner. - Neuner, Peter, 1941- (OLS)http://pul/name/31100 (Josef Knecht, 1977)
"Literatur": p. 150-151.

Communism & Christ / by Charles W. Lowry ; with a foreword by W. R. Matthews. - Lowry, Charles W. (OLS)http://pul/name/42024 (Eyre & Spottiswoode, 1954)
Bibliography: p. [191]-192.