Khalaf Hussein, A. (2012). A retail tax base. Alustath, 1(1), 154-196.

Ahmed Khalaf Hussein. "A retail tax base". Alustath, 1, 1, 2012, 154-196.

Khalaf Hussein, A. (2012). 'A retail tax base', Alustath, 1(1), pp. 154-196.

Khalaf Hussein, A. A retail tax base. Alustath, 2012; 1(1): 154-196.