el koussy, a. (1964). preconditions for educational planning. the institute of national planning.
Chicago-čujuhus (17. p.)el koussy, a.a. Preconditions for Educational Planning. cairo: the institute of national planning, 1964.
MLA-čujuhus (9. p.)el koussy, a.a. Preconditions for Educational Planning. the institute of national planning, 1964.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.