See also Ahmad Kasravi, Azari or The Ancient Language of Azerbaijan (Āzari yā Zabān-e Bāstān-e Āzar'bāi'jān), in Persian, third edition (Tehran, 1325 AH/1946). This text can be downloaded free of charge from the bibliography section (Ketāb Shenāsi) of: Ahmad Kasravi, 1891-1946.