qayum, a. (1964). an extension of black's optimum savings model. the institute of national planning.
Citazione stile Chigago Style (17a edizione)qayum, a. An Extension of Black's Optimum Savings Model. cairo: the institute of national planning, 1964.
Citatione MLA (9a ed.)qayum, a. An Extension of Black's Optimum Savings Model. the institute of national planning, 1964.