Cita APA (7a ed.)

Singer, H., Jennings, A., & Wood, J. B. (1987). Food aid: The challenge and the opportunity. Clarendon Press.

Cita Chicago Style (17a ed.)

Singer, Hans, Anthony Jennings, y John B. Wood. Food Aid: The Challenge and the Opportunity. Oxford: Clarendon Press, 1987.

Cita MLA (9a ed.)

Singer, Hans, et al. Food Aid: The Challenge and the Opportunity. Clarendon Press, 1987.