qayum, a. (1964). an extension of black's optimum savings model. the institute of national planning.
Цитирование в стиле Чикаго (17-е изд.)qayum, a. An Extension of Black's Optimum Savings Model. cairo: the institute of national planning, 1964.
Цитирование MLA (9-е изд.)qayum, a. An Extension of Black's Optimum Savings Model. the institute of national planning, 1964.