el tigi, a. e. d. (1964). determining investment priority ratings. the institute of national planning.
Citazione stile Chigago Style (17a edizione)el tigi, aziz el din. Determining Investment Priority Ratings. cairo: the institute of national planning, 1964.
Citatione MLA (9a ed.)el tigi, aziz el din. Determining Investment Priority Ratings. the institute of national planning, 1964.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.