, E. (2013). Effect of the Structural Changes on Economies of the Gulf Countries Council (GCC) in Developing Internal Trade. Journal of Research Diyala humanity, 35(111), 187-209.
Elwis A. Hadaya . "Effect of the Structural Changes on Economies of the Gulf Countries Council (GCC) in Developing Internal Trade". Journal of Research Diyala humanity, 35, 111, 2013, 187-209.
, E. (2013). 'Effect of the Structural Changes on Economies of the Gulf Countries Council (GCC) in Developing Internal Trade', Journal of Research Diyala humanity, 35(111), pp. 187-209.
, E. Effect of the Structural Changes on Economies of the Gulf Countries Council (GCC) in Developing Internal Trade. Journal of Research Diyala humanity, 2013; 35(111): 187-209.