- oBilet.com otobus-bileti/kostence-galati_galati
- ru.us.edu.vn en/ConstantaEconomy. The port of Kustendje/Köstence in 1856.
- Cathedral of Saints Peter and Paul
- Grand Mosque of Constanța (Marea Moschee din Constanța)
- stacks.stanford.edu file/druid:cy920sj2617/…
- repository.library.georgetown.edu bitstream/…
- skyscrapercity.com threads/romania-3-photos-a-…
- academia.edu 37264695/Imperial_Refuge_…
- http://ndl.ethernet.edu.et bitstream/123456789/34015/1/…
- ebin.pub migration-and-disease-in-the-black-sea-…
- wiki5.ru wiki/Constanța