المؤلفون: Drari, Djihad
URL: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.850050Test
المؤلفون: Porton, Jennie Joy
URL: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.855290Test
المؤلفون: Chumbler, Neale R.
Advisors: Kercher, Kyle
URL: http://rave.ohiolink.edu/etdc/view?acc_num=case1061821937Test