Não informado. (1970). Feed and farm supplier. Association of British Organic Fertilisers.
Chicagoスタイル(17版)引用形式Não informado. Feed and Farm Supplier. London: Association of British Organic Fertilisers, 1970.
MLA(8版)引用形式Não informado. Feed and Farm Supplier. Association of British Organic Fertilisers, 1970.
警告: この引用は必ずしも正確ではありません.