Não informado. (2004). Oxford Agrarian Studies. University of Oxford, Institute of Agricultural Economics.
Citace podle Chicago (17th ed.)Não informado. Oxford Agrarian Studies. Oxford, Inglaterra: University of Oxford, Institute of Agricultural Economics, 2004.
Citace podle MLA (8th ed.)Não informado. Oxford Agrarian Studies. University of Oxford, Institute of Agricultural Economics, 2004.
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