Singer, H. W. (1987). Food aid: The challenge and the opportunity. Clarendon Press.
Cita Chicago (17th ed.)Singer, Hans Wolfgang. Food Aid: The Challenge and the Opportunity. Oxford: Clarendon Press, 1987.
Cita MLA (9th ed.)Singer, Hans Wolfgang. Food Aid: The Challenge and the Opportunity. Clarendon Press, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.