el koussy, a. (1964). preconditions for educational planning. the institute of national planning.
Chicagoスタイル(17版)引用形式el koussy, a.a. Preconditions for Educational Planning. cairo: the institute of national planning, 1964.
MLA(9版)引用形式el koussy, a.a. Preconditions for Educational Planning. the institute of national planning, 1964.
警告: この引用は必ずしも正確ではありません.