Não informado. (1970). Feed and farm supplier. Association of British Organic Fertilisers.
Style de citation Chicago (17e éd.)Não informado. Feed and Farm Supplier. London: Association of British Organic Fertilisers, 1970.
Style de citation MLA (8e éd.)Não informado. Feed and Farm Supplier. Association of British Organic Fertilisers, 1970.
Attention : ces citations peuvent ne pas être correctes à 100%.