Knoller, R. (1993). The activities of religious Zionist youth groups in Europe during the Holocaust 1939 - 1945: A summarized review of limited archival sources. Arnold and Leona Finkler Institute of Holocaust Research.

Knoller, Rivqa. The Activities of Religious Zionist Youth Groups in Europe During the Holocaust 1939 - 1945: A Summarized Review of Limited Archival Sources. Ramat-Gan: Arnold and Leona Finkler Institute of Holocaust Research, 1993.

Knoller, Rivqa. The Activities of Religious Zionist Youth Groups in Europe During the Holocaust 1939 - 1945: A Summarized Review of Limited Archival Sources. Arnold and Leona Finkler Institute of Holocaust Research, 1993.