- jerusalemfoundation.org old-project/beit-yisrael-…
- wn.com Beit_El_Synagogue
- jewisheurope.org detail.asp?ID=199
- second.wiki wiki/synagoge_beit_tikwa_bielefeld
- izmirdebugun.com beit-hillel-sinagogu-muze-oldu/
- jguideeurope.org en/site/synagogue-of-tallinn/