al-Asrar al-dilaliyah fi al-zawahir al-lughwiyah fi Basa'ir dhawi al-tamyiz fi lata'if al-kitab al-'Aziz lil Firuzabadi - Khidr, Mustafa Muhammad'Abd al-Majid (al-Iskandariyah : Mu'assasah Huras al-Dawliyah, 2010)
Keywords: al-Firuzabadi, Muhammad ibn Ya'qūb, -- 1329-1414 or 15.