el- sayed, a. (1964). l' impot d' education propoition a conmenter. the institute of national planning.
Чикаго стиль цитування (17-те видання)el- sayed, atef. L' Impot D' Education Propoition a Conmenter. cairo: the institute of national planning, 1964.
Стиль цитування MLA (9-ме видання)el- sayed, atef. L' Impot D' Education Propoition a Conmenter. the institute of national planning, 1964.