Hussein Abdul Amir, W. (2012). Analytical study of the evolution of digital Olympic swimming competition (back, chest and the Butterfly) for women since 1924 to 2008 AD. , 4(3), 320-349.
Wafa Hussein Abdul Amir. "Analytical study of the evolution of digital Olympic swimming competition (back, chest and the Butterfly) for women since 1924 to 2008 AD". , 4, 3, 2012, 320-349.
Hussein Abdul Amir, W. (2012). 'Analytical study of the evolution of digital Olympic swimming competition (back, chest and the Butterfly) for women since 1924 to 2008 AD', , 4(3), pp. 320-349.
Hussein Abdul Amir, W. Analytical study of the evolution of digital Olympic swimming competition (back, chest and the Butterfly) for women since 1924 to 2008 AD. , 2012; 4(3): 320-349.