Abdollahy, R. (1977). A history of chronology and calenders in Iran from ancient to modern times, with principles of date-conversion. British Library Document Supply Centre.
Chicago-referens (17:e uppl.)Abdollahy, Reza. A History of Chronology and Calenders in Iran from Ancient to Modern Times, with Principles of Date-conversion. Boston Spa, United Kindom: British Library Document Supply Centre, 1977.
MLA-referens (8:e uppl.)Abdollahy, Reza. A History of Chronology and Calenders in Iran from Ancient to Modern Times, with Principles of Date-conversion. British Library Document Supply Centre, 1977.
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