el koussy, a. (1964). preconditions for educational planning. the institute of national planning.
Čikaški stil citiranja (17. izdanje)el koussy, a.a. Preconditions for Educational Planning. cairo: the institute of national planning, 1964.
MLA način citiranja (9. izdanje)el koussy, a.a. Preconditions for Educational Planning. the institute of national planning, 1964.
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