. M . Faris, A. (2010). ESTIMATION OF THE ECONOMIC EFFICIENCY OF EFFECTIVE RESOURCES FOR A SAMPLE OF WHEAT FARMERS FOR THE SEASON 2008/2009. , 41(3), 140-149.
Ahmed . M . Faris. "ESTIMATION OF THE ECONOMIC EFFICIENCY OF EFFECTIVE RESOURCES FOR A SAMPLE OF WHEAT FARMERS FOR THE SEASON 2008/2009". , 41, 3, 2010, 140-149.
. M . Faris, A. (2010). 'ESTIMATION OF THE ECONOMIC EFFICIENCY OF EFFECTIVE RESOURCES FOR A SAMPLE OF WHEAT FARMERS FOR THE SEASON 2008/2009', , 41(3), pp. 140-149.
. M . Faris, A. ESTIMATION OF THE ECONOMIC EFFICIENCY OF EFFECTIVE RESOURCES FOR A SAMPLE OF WHEAT FARMERS FOR THE SEASON 2008/2009. , 2010; 41(3): 140-149.