el koussy, a. (1964). preconditions for educational planning. the institute of national planning.
Cita Chicago (17th ed.)el koussy, a.a. Preconditions for Educational Planning. cairo: the institute of national planning, 1964.
Cita MLA (9th ed.)el koussy, a.a. Preconditions for Educational Planning. the institute of national planning, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.