Não informado. (1992). Journal of Agricultural and Resource Economics. Western Agricultural Economics Association.
Chicago-Zitierstil (17. Ausg.)Não informado. Journal of Agricultural and Resource Economics. Bozeman, Mont: Western Agricultural Economics Association, 1992.
MLA-Zitierstil (8. Ausg.)Não informado. Journal of Agricultural and Resource Economics. Western Agricultural Economics Association, 1992.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.