Mahmoud, M. W. (1968). Analytical Study for Expenditure on Food in the Private Sector. The Institute of National Planning.
Lua i Stíl Chicago (17ú heag.)Mahmoud, M. W. Analytical Study for Expenditure on Food in the Private Sector. Cairo: The Institute of National Planning, 1968.
Lua MLA (9ú heag.)Mahmoud, M. W. Analytical Study for Expenditure on Food in the Private Sector. The Institute of National Planning, 1968.