al-Samarra'i, Ibrahim al-Fi'l zamanuhu wa abniyatuh Fi'l zamanuhu wa abniyatuh / ta'lif Ibrahim al-Samarra'i - 4th ed. - Beirut : Mu'assasah al-Risalah, 1986 - 252 p. ; 24 cm. Subjects--Topical Terms: Arabic language--Conjugation