Britannica, IstanbulArchived 2007-12-18 at the वेबैक मशीन: Until the Turkish Post Office officially changed the name in 1930, however, the city continued to bear the millenary name of Constantinople.
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"संग्रहीत प्रति". मूल से 31 मार्च 2017 को पुरालेखित. अभिगमन तिथि 22 अक्तूबर 2018.
Britannica, IstanbulArchived 2007-12-18 at the वेबैक मशीन: Until the Turkish Post Office officially changed the name in 1930, however, the city continued to bear the millenary name of Constantinople.
