Alkhayat, D., and J. Shukri Baseem. “The Effect of Using the Constructional Learning Model and Gagne Deductive Model in Obtaining and Maintaining Certain Sport Education Teaching methods’ Concepts”. Al-Rafidain Journal For Sport Sciences, vol. 16, no. 54, Aug. 2010, pp. 169-87, doi:10.33899/rajsport.2010.6010.