Phd, , Nizar Aziz Habeeb Al-Khaqani, P. (2016). The security Procedures of the Abbasid Caliphate to Secure the Road between the Capital – Mecca 132-334 A.H.. Alustath, 41(1), 96-110.

Phd; Prof. Nizar Aziz Habeeb Al-Khaqani. "The security Procedures of the Abbasid Caliphate to Secure the Road between the Capital – Mecca 132-334 A.H.". Alustath, 41, 1, 2016, 96-110.

Phd, , Nizar Aziz Habeeb Al-Khaqani, P. (2016). 'The security Procedures of the Abbasid Caliphate to Secure the Road between the Capital – Mecca 132-334 A.H.', Alustath, 41(1), pp. 96-110.

Phd, , Nizar Aziz Habeeb Al-Khaqani, P. The security Procedures of the Abbasid Caliphate to Secure the Road between the Capital – Mecca 132-334 A.H.. Alustath, 2016; 41(1): 96-110.