Analysis of information sources in references of the Wikipedia article "زبان ترکی آذربایجانی" in Persian language version.
However, in 1936–1937, the situation changed fundamentally. Even though there was no explicit mention of an enactment of state language in local Azerbaijani laws, the term “Turkish” was substituted by “Azerbaijani” in state and court documents. Later in 1956, “Azerbaijani” was given the status of the official state language of Soviet Azerbaijan. This was also mentioned in Soviet Azerbaijan's last Constitution adopted in 1978.
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