* Britannica, Istanbul:When the Republic of Turkey was founded in 1923, the capital was moved to Ankara, and Constantinople was officially renamed Istanbul in 1930.
^ Britannica, Istanbul:Idi ti Republika ti Turkia ket nabangon idi 1923, ti lapitoliona ket naiyakar idiay Ankara, ken ti Konstantinopla ket opisial idi a nanaganan ti Istanbul idi 1930.