Não informado. (1928). Journal of Agricultural Economics. Agricultural Economics Society.
Chicagoスタイル(17版)引用形式Não informado. Journal of Agricultural Economics. Reading, Inglaterra: Agricultural Economics Society, 1928.
MLA(8版)引用形式Não informado. Journal of Agricultural Economics. Agricultural Economics Society, 1928.
警告: この引用は必ずしも正確ではありません.