Smil, V. (2000). Feeding the world: A challenge for the twenty-first century. MIT Press.
Cita Chicago (17th ed.)Smil, Vaclav. Feeding the World: A Challenge for the Twenty-first Century. Cambridge, Mass: MIT Press, 2000.
Cita MLA (9th ed.)Smil, Vaclav. Feeding the World: A Challenge for the Twenty-first Century. MIT Press, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.