Não informado. (1993). Journal of Agricultural and Applied Economics. Southern Agricultural Economics Association.
Cita Chicago Style (17a ed.)Não informado. Journal of Agricultural and Applied Economics. Auburn, Ala: Southern Agricultural Economics Association, 1993.
Cita MLA (8a ed.)Não informado. Journal of Agricultural and Applied Economics. Southern Agricultural Economics Association, 1993.
Precaución: Estas citas no son 100% exactas.