el gohary, h. (1969). computer and programming concepts. National Planning Institute.
Citazione stile Chigago Style (17a edizione)el gohary, hassan.M. Computer and Programming Concepts. cairo: National Planning Institute, 1969.
Citatione MLA (9a ed.)el gohary, hassan.M. Computer and Programming Concepts. National Planning Institute, 1969.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.