1. The Essentials of Arabic: A Manual for Teaching Classical and Colloquial Arabic;Farayha,1958
2. Alkitaab, Almaktabah Alameeriyah Alkubraa. (In Arabic);Sibawaih,1898
3. Alemla Wa Altarqeem Fi Alketaabah Alarabeya. (In Arabic);Ibrahim,1975
4. Orthographic variation in modern standard Arabic: the case of the hamzah;Parkinson,1988
5. Alhamzah Fi Daw’ Elm Allughah Alhadeeth;Alnawasra,2011