Não informado. (2004). Oxford Agrarian Studies. University of Oxford, Institute of Agricultural Economics.
Chicagoスタイル(17版)引用形式Não informado. Oxford Agrarian Studies. Oxford, Inglaterra: University of Oxford, Institute of Agricultural Economics, 2004.
MLA(8版)引用形式Não informado. Oxford Agrarian Studies. University of Oxford, Institute of Agricultural Economics, 2004.
警告: この引用は必ずしも正確ではありません.