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.
Čikaški stil citiranja (17. izdanje)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.
MLA način citiranja (9. izdanje)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.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.