Allam, S. T. (1972). Agricultural Prices: Bases of method and Control. معهد التخطيط القزمى.
Tohutoru Kātū Chicago (17th ed.)Allam, Saad Taha. Agricultural Prices: Bases of Method and Control. القاهرة: معهد التخطيط القزمى, 1972.
Tohutoro MLA (9th ed.)Allam, Saad Taha. Agricultural Prices: Bases of Method and Control. معهد التخطيط القزمى, 1972.
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