Cita APA (7th ed.)

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.