Cita APA (7th ed.)

Warren, J., Lawson, C., & Belcher, K. W. (2008). The agri-environment. Cambridge University Press.

Cita Chicago (17th ed.)

Warren, John, Clare Lawson, i Kenneth Ward Belcher. The Agri-environment. Cambridge, Eng: Cambridge University Press, 2008.

Cita MLA (9th ed.)

Warren, John, et al. The Agri-environment. Cambridge University Press, 2008.