- biyeregitsek.com basel-gezi-rehberi-isvicre-basel…
- tcmb.gov.tr wps/wcm/connect/blog/tr/main menu/…
- arsiv.mackolik.com Takim/336/Basel
- switzerlanding.com basel-card/
- booking.com city/ch/basel.tr.html
- kamusaati.com gundem/basel-hangi-ligde-basel-…
- dunya.com gundem/basel-iii-kriterleri-ve-turk-…
- en.wikipedia.org Basel Minster