qayum, a. (1964). an extension of black's optimum savings model. the institute of national planning.
Citación estilo Chicagoqayum, a. An Extension of Black's Optimum Savings Model. cairo: the institute of national planning, 1964.
Cita MLAqayum, a. An Extension of Black's Optimum Savings Model. the institute of national planning, 1964.