Analysis of information sources in references of the Wikipedia article "הוגו פרויס" in Hebrew language version.
{{citation}}
: (עזרה). Review of LBI Yearbook vol. 20, edited by Robert Weltsch.{{cite web}}
: (עזרה){{cite web}}
: (עזרה){{cite web}}
: (עזרה){{citation}}
: (עזרה). Review of LBI Yearbook vol. 20, edited by Robert Weltsch.