El Gibaly, A. (1972). Economic and Statistical Considerations in the Formulation of Engel Curve and the Effect of Household size and Composition on Consumption. The Institute of National Planning.
Tohutoru Kātū Chicago (17th ed.)El Gibaly, Azza. Economic and Statistical Considerations in the Formulation of Engel Curve and the Effect of Household Size and Composition on Consumption. Cairo: The Institute of National Planning, 1972.
Tohutoro MLA (9th ed.)El Gibaly, Azza. Economic and Statistical Considerations in the Formulation of Engel Curve and the Effect of Household Size and Composition on Consumption. The Institute of National Planning, 1972.
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