El-Imam, M. M. (1968). The Demand - Income Function - A Study in Aggregation. The Institute of National Planning.
Lua i Stíl Chicago (17ú heag.)El-Imam, M. M. The Demand - Income Function - A Study in Aggregation. Cairo: The Institute of National Planning, 1968.
Lua MLA (9ú heag.)El-Imam, M. M. The Demand - Income Function - A Study in Aggregation. The Institute of National Planning, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.