Cita APA (7th ed.)
Conway, G. R., & Pretty, J. N. Unwelcome Harvest: Agriculture and Pollution. Earthscan.
Cita Chicago (17th ed.)
Conway, Gordon R., i Jules N. Pretty. Unwelcome Harvest: Agriculture and Pollution. Londres, Inglaterra: Earthscan.
Cita MLA (9th ed.)
Conway, Gordon R., i Jules N. Pretty. Unwelcome Harvest: Agriculture and Pollution. Earthscan.
Atenció: Aquestes cites poden no estar 100% correctes.