- archive.org details/holy-martyrs-of-gorcum-church
- joysoftraveling.com israel/church-of-the-holy-…
- http://romeofthewest.com 2005/12/photos-of-church-of-…
- famouswonders.com church-of-the-holy-apostles/
- orthodoxbj.com en/history/
- nelmitravel.com the-holy-cross-church-in-warsaw-…
- madainproject.com church_of_the_holy_sepulchre