S. Ibrahim, H., حسين, A. Ogisteen, T. and ثائر 2009. Establishing grades and standard levels of some track and field for freshmen students. Al-Rafidain Journal For Sport Sciences (RJSS). 15, 51 (Jan. 2009), 94–121. DOI:https://doi.org/10.33899/rajsport.2009.6103.