Lambert, M. (1991). Farming and the environment. Raintree Steck-Vaughn.
Cita Chicago Style (17a ed.)Lambert, Mark. Farming and the Environment. Austin, Tex.: Raintree Steck-Vaughn, 1991.
Cita MLA (8a ed.)Lambert, Mark. Farming and the Environment. Raintree Steck-Vaughn, 1991.
Precaución: Estas citas no son 100% exactas.