Zadeh, Travis.Of Mummies, Poets, and Water Nymphs: Tracing the Codicological Limits of Ibn Khurradādhbih's Geography // ʿAbbasid Studies IV: Occasional Papers of the School of ʿAbbasid Studies, Leuven, July 5-July 9, 2010 (англ.) / Bernards, Monique. — Gibb Memorial Trust, 2013. — P. 8—75. — ISBN 978-0-906094-98-3. Архивировано 22 августа 2022 года. «Al-Muqaddasi mentions that al-Jayhani had studied philosophy, astronomy, and geometry, and that he would gather together foreigners (ghurabā) and ask them about the realms (mamālik), and the routes (masālik) to reach the various regions (Al-Muqaddasi, Ahsan, 4-5).» с.48
Zadeh, Travis.Of Mummies, Poets, and Water Nymphs: Tracing the Codicological Limits of Ibn Khurradādhbih's Geography // ʿAbbasid Studies IV: Occasional Papers of the School of ʿAbbasid Studies, Leuven, July 5-July 9, 2010 (англ.) / Bernards, Monique. — Gibb Memorial Trust, 2013. — P. 8—75. — ISBN 978-0-906094-98-3. Архивировано 22 августа 2022 года. «Al-Muqaddasi mentions that al-Jayhani had studied philosophy, astronomy, and geometry, and that he would gather together foreigners (ghurabā) and ask them about the realms (mamālik), and the routes (masālik) to reach the various regions (Al-Muqaddasi, Ahsan, 4-5).» с.48