Britannica, Istanbulเก็บถาวร 2007-12-18 ที่ เวย์แบ็กแมชชีน:When the Republic of Turkey was founded in 1923, the capital was moved to Ankara, and Constantinople was officially renamed Istanbul in 1930.
Britannica, Istanbulเก็บถาวร 2007-12-18 ที่ เวย์แบ็กแมชชีน:When the Republic of Turkey was founded in 1923, the capital was moved to Ankara, and Constantinople was officially renamed Istanbul in 1930.