The Americana, Vol.15, Ed. Frederick Converse Beach, George Edwin Rines, (1912);[1]
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Britannica, IstanbulLưu trữ 2007-12-18 tại Wayback Machine:When the Republic of Turkey was founded in 1923, the capital was moved to Ankara, and Constantinople was officially renamed Istanbul in 1930.
Britannica, IstanbulLưu trữ 2007-12-18 tại Wayback Machine:When the Republic of Turkey was founded in 1923, the capital was moved to Ankara, and Constantinople was officially renamed Istanbul in 1930.