Não informado. (1992). Journal of Agricultural and Resource Economics. Western Agricultural Economics Association.
Cita Chicago Style (17a ed.)Não informado. Journal of Agricultural and Resource Economics. Bozeman, Mont: Western Agricultural Economics Association, 1992.
Cita MLA (8a ed.)Não informado. Journal of Agricultural and Resource Economics. Western Agricultural Economics Association, 1992.
Precaución: Estas citas no son 100% exactas.