"Kardeş Belediyeler" [Gaziosmanpaşa Twin Towns]. Gaziosmanpaşa [Gaziosmanpaşa Official Website] (in Turkish). Archived from the original on 2017-10-30. Retrieved 2017-12-19.
iznik.bel.tr
"Kardeş Belediyeler" [Iznik Twin Towns]. Iznik [Iznik Official Website] (in Turkish). Retrieved 2017-12-19.
"Mostar Gradovi prijatelji" [Mostar Twin Towns]. Grad Mostar [Mostar Official City Website] (in Macedonian). Archived from the original on 2013-10-30. Retrieved 2013-12-19.
"Mostar Gradovi prijatelji" [Mostar Twin Towns]. Grad Mostar [Mostar Official City Website] (in Macedonian). Archived from the original on 2013-10-30. Retrieved 2013-12-19.