Não informado. (1992). Journal of Agricultural and Resource Economics. Western Agricultural Economics Association.
Chicago (17e ed.) BronvermeldingNão informado. Journal of Agricultural and Resource Economics. Bozeman, Mont: Western Agricultural Economics Association, 1992.
MLA (8e ed.) BronvermeldingNão informado. Journal of Agricultural and Resource Economics. Western Agricultural Economics Association, 1992.
Let op: Deze citaties zijn niet altijd 100% accuraat.